Cookies help us run our site more efficiently.

By clicking “Accept”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. View our Privacy Policy for more information or to customize your cookie preferences.

The best way to move beyond factory farming is not about the animals

News Feed
Wednesday, August 7, 2024

The most ambitious goal of the animal movement has always been to eradicate factory farming and inspire people to eat more plants and fewer animals. This only makes sense, as the scale of the violence endemic to industrial farming radically dwarfs all other forms of animal suffering. Beyond the problem of the inevitable suffering involved in the slaughter of animals we consume, factory farming necessitates new forms of animal abuse such as intensive confinement, drugs that keep sick animals just alive enough to be profitable, and genetic modifications that induce diseases. (While genetic modification is often interpreted to mean direct edits to a genome, the USDA’s definition also includes selective breeding, the technique the factory farm industry has used to deform animals beyond recognition.) These harms to animals, as we will see, are tightly linked to harms to humans.  This story is part of How Factory Farming Ends Read more from this special package analyzing the long fight against factory farming here. This series is supported by Animal Charity Evaluators, which received a grant from Builders Initiative. But the way forward for the animal movement may be less about swelling the ranks of vegetarians and vegans — which has long been its primary ambition — and more about identifying an overlapping consensus between social movements that center animals and those that center concerns like climate change and public health. These movements share an interest in shifting toward a more plant-based food system as never before. We should also share resources and tactics.  Today, government at every level, from local to federal, actively promotes consuming high levels of animal products and the continued growth of factory farming; large portions of the legal system work primarily to defend industrial farms against ordinary citizens and public advocates rather than the other way around (for one powerful illustration of this, see the documentary The Smell of Money). Only a broad coalition can hope to change this.  Increased collaboration with the public health movement will be particularly crucial in encouraging a more plant-based food system. In the short term, though, it is emerging collaborations with the environmental movement that show the most promise. The well-known lower carbon footprint of plant-based diets — as low as a quarter of the emissions of meat-heavy diets — provides a particularly powerful form of common ground.    Let’s consider a rather extraordinary development that resulted from animal and environmental groups working together that occurred in just the last year.     A groundbreaking experiment suggests reducing US meat eating is attainable Starting last September, hundreds of American college and university dining halls serving about a million students began to systematically modify how they served food in ways designed to substantially increase the consumption of plants. The schools, which have in common the use of Sodexo as a food service provider but little else, were guided in part by a recent peer-reviewed study finding that the use of “plant-based defaults” could significantly shift diners’ choices toward plant-based foods. (One of us, Aaron, is on the board of and helped launch an organization that partnered with Sodexo on this experiment, but he was not personally involved in the project.) In the three-month study, a hot meal station in three college dining halls, two in the American Northeast and one in the South, alternated between serving a plant-based and meat-based meal by default. When a plant-based entrée was the default, diners could ask for a meat meal. Depending on how conservatively the results are calculated, on average between 21.4 and 57.2 percent fewer meat-based meals were chosen when plant-based foods were the default. And, crucially, surveys found that diners remained as satisfied as ever (something that the presence of plant-based meats seemed to have helped in this study). A range of other public and private institutions — including governments, hospitals, and businesses — around the world are experimenting with similar tactics.  Diners do not need to be ethical superheroes, or even be ethically motivated, to eat in ways more in line with their values  The basic insight being employed here is that institutional food service providers already make decisions every day that shape what their customers choose by deciding, for example, what dish to list first on the menu, what entree to make the special, and what products to most heavily promote. We diners are already being nudged by food service providers toward more profitable foods (often animal products) every time we buy food. The strategies being employed at the 400 colleges and universities in one way or another involve a decision on the part of dining services to let concerns about health and sustainability — especially climate change — influence these existing decisions about food order, placement, and so forth.  This can be thought of as behavior architecture. Just as good physical architecture is aesthetically pleasing and makes it easy to do what we have come to that place to do, good behavior architecture in dining halls, supermarkets, and restaurants helps consumers make prosocial choices — like plant-based foods with lower climate impacts — the easiest choices. Diners do not need to be ethical superheroes, or even be ethically motivated, to eat in ways more in line with their values.  Two issues raised here seem especially important. The first is to better understand how recent and unique the new overlapping consensus between animal and ecological concerns is and what is making it work. The second is to consider the potentially even more consequential, but less-developed, coalitional possibilities of animal and ecological advocates teaming up with the public health sector to advocate a shift towards plant-based diets and away from factory farming.  In an era of ubiquitous factory farming, the public health sector has its own reasons to prefer a more plant-based food system — for example, the way that factory farms promote antibiotic resistance, an escalating global crisis associated with nearly 5 million annual deaths and increase the risk of zoonotic diseases like bird flu reaching pandemic proportions. Balanced plant-based diets are also widely regarded to have health advantages (especially lowering risk for heart disease), but since these benefits are well known, here we want to emphasize the distinct advantages of a more plant-based food system, beyond the general healthfulness of plant foods.  That a more plant-based diet is better for animals isn’t enough to move policy. This same diet shift is already being used to reduce climate impacts; it could also preserve the value of antibiotics and reduce the number of new diseases we face, as well as shore up political will to transform our diets. The climate science consensus on meat reduction The nascent alliance between animal and environmental advocates on food system change is not simple. The two movements have often had different agendas. For most of our lives, mainstream environmentalism has not seriously engaged the problems with the food system, especially the problems posed by industrial meat. This is true despite the fact scientists for decades have documented the enormous role meat plays in climate change and virtually every other environmental crisis.       Some of the reasons for this hesitancy are perfectly understandable: Emissions from the energy and transportation systems had proven technological solutions, which made solving emissions in those sectors comparatively straightforward. Food, by contrast, looked like a hornet’s nest. It’s hard enough to get people to focus on climate change, which until recently has felt so abstract, distant, and slow. To add into the conversation what is one of the most uncomfortable and contentious of all social issues — the ethics of eating — would likely have been an invitation to be ignored.  But sometimes being ignored is just another way to describe being ahead of one’s time. Addressing the role of food systems in climate change was perhaps ahead of its time 20 years ago when little progress had been made in energy and transport, but no more. Recent years have seen a new willingness and a recognition of the necessity to address the climate impacts of animal products. The highly regarded EAT-Lancet Commission, a panel of nutrition, sustainability, and agriculture experts, in 2019 concluded that even if we decarbonized everything else, if we don’t address our food system, it will be impossible to meet the emissions target set by the Paris climate agreement. Global food system studies on the interventions needed to address climate change — such as the study led by University of Oxford researcher Joseph Poore published in Science or the study published by the nonprofits GRAIN and the Institute for Agriculture and Trade Policy — consistently note the necessity of reducing meat consumption.  Environmental policy advocates still often remain reluctant to push these conclusions in the nitty-gritty of policy work, but this seems to us the natural reluctance before one finally rips off the Band-Aid. While the study of the Sodexo schools suggests that the experience of eating fewer animals need not reduce diner satisfaction, the idea of eating fewer animals remains politically unpopular. Suggesting eating less of anything can be branded as un-American, and conservative news outlets have made a fetish of warning that environmentalists are “coming for your burgers” even before any meaningful policies to shift diets have been enacted.       It will take considerable movement effort to transform the consensus in environmental science about the need to shift diets fully into organizational practice and policy advocacy, but we believe the case for eating more plants is now so well established that there is no turning back. Advocates in the environmental space who press for meat reduction will still often find themselves resisted; a quiet civil war is raging in the movement. There have been and will be ups and downs in that war, but we believe an invisible threshold has been crossed and that, battle by battle, policy by policy, the environmental movement is integrating the scientific consensus that meat reduction is essential to addressing climate change and many other ecological concerns.  The crucial third leg in the coalition against factory farming is public health That said, even when climate change advocates do address the problems with meat, there is the possibility of serious disagreements about the role of poultry and pork. Despite a high carbon footprint compared to plant-based foods and a load of other problems, poultry and pork meat can generally be produced at a fraction of the carbon footprint of beef. This is why we so often hear from environmentalists about the desirability of reducing beef and dairy consumption in particular: By the numbers, these industries have among the worst climate footprint of any food.       However, in terms of animal suffering, no industry is as horrific as today’s poultry industry; the pork industry is equally nightmarish, if smaller in scale (virtually all commercially available chickens and turkeys and the overwhelming majority of pig meat comes from factory farms). Modern industrial chickens have the disturbing distinction of being so genetically modified to produce more flesh and eggs that their very biology destines them to suffer from a range of diseases and incapacities (which is not to mention that it takes 100 or more individual chickens to produce as much meat as in a single cow). When climate activists suggest an overly numbers-driven approach to reducing food climate impacts, they may drive the production of more poultry and pig factory farms by recommending eating chicken or pork over beef. This is already happening.  Happily for the animal cause, though, data and research from the public health sector about the dangers of industrial poultry and pig production can ameliorate this tension. Studies show that while risks from different industries vary, if we don’t reduce animal-sourced foods, we will increase infectious disease. From the point of view of public health, the poultry industry is profoundly worrying, both because of the routine use of antibiotics that promotes antimicrobial resistance and the potential to seed a pandemic. In recent months, the H5N1 bird flu virus, which if it mutates to be able to spread among humans could make Covid-19 seem like the common cold, has leaped from birds to cattle and has infected several US dairy workers. The extreme industrialization of both the poultry and pork industries — with their use of densely packed, genetically uniform, and immunocompromised animals — is a perfect Petri dish for cultivating the next plague. Understanding how animal agriculture shapes human health The meat industry plays a pivotal role in public health. Check out Future Perfect’s coverage of meat’s impact on everything from pandemic risk to failing antibiotics to nutrition:  The meat we get from factory farms is a pandemic risk, too  The infectious disease trap of animal agriculture Big Meat just can’t quit antibiotics You probably don’t need to worry about your protein intake What a plant-based diet can and cannot do for you, explained by Netflix’s You Are What You Eat Just as climate activists have overlapping interests with animal advocates on diet change because of the high carbon footprint of animal products, public health advocates have overlapping interests because of the very basic biological fact that sick farmed animals not only suffer but can pose profound disease risk for human populations. The basic principle here is known in the international public health community as One Health, an approach that optimizes health outcomes by, in the words of the US Centers for Disease Control and Prevention (CDC), “recognizing the interconnection between people, animals, plants, and their shared environment.”   One Health is de rigueur in contemporary public health contexts. It is endorsed and promoted by the CDC, the World Bank, and just about every other authoritative advocate of public health. Theoretically, One Health already guides US law and policy, yet it has very little influence when it runs up against powerful political interests. One Health advocates, like animal advocates, have to contend with the power of industry; so far, sociopolitical factors like entrenched commitments to factory farming (among others) thwart the implementation of One Health frameworks. Ultimately, this means that factory farms benefit from unchecked externalities — the public rather than industry pays the immense cost of lost drugs and the cost of managing or preventing pandemics. Of course, this at least temporarily makes reducing the consumption of animal products that much harder by making them artificially cheap.  The current crisis of antibiotic use in the US meat industry dramatically illustrates how public health advocates struggle to rein in big meat and could benefit from coalition with the animal movement. For many decades, the scientific community, often emphasizing a One Health frame, has warned about the loss of lifesaving drugs because of the scale at which antibiotics are routinely administered to farmed animals. Despite high consumer demand for meat raised without antibiotics and government regulation of antibiotics in agriculture intensifying since the 2010s, the industry can’t quit antibiotics. In the factory farm system, sick animals are often more profitable than healthy ones, and sick animals need drugs to stay alive and to be profitable. This is why advocating for antibiotic-free meat without arguing for a change in production has ended up playing into the hands of industry. The problem has never been the drugs themselves, but the dismal conditions that necessitate them: The root problem is factory farming itself. What if public health concerns with the creation of antibiotic-resistant pathogens or the growth of new zoonotic diseases were taken up alongside concerns with cruelty and sustainability?  So, unsurprisingly, after a dip due to regulation starting in 2016, antibiotic use in agriculture, according to the latest FDA statistics, is ticking up again. But even this concerning growth in antibiotic sales understates the problem because a mounting body of evidence suggests that even meat labeled antibiotic-free is, illegally, often from animals that were fed drugs. A study published in Science of the US supply of antibiotic-free beef found that fully 15 percent of the meat was from animals illegally fed drugs. New evidence also suggests pork producers are using prohibited antibiotics. Despite the USDA admitting last year that antibiotic-free claims have indeed come into question, it has not yet taken corrective action. The industry is not all-powerful, but it is often more powerful than any one social movement. Divided we are conquered.  But what if public health advocates, who have long been frustrated with One Health being officially endorsed while being ignored in actual policy, worked in coordination with the nascent coalitions emerging between animal and climate groups? What if One Health concerns with the creation of antibiotic-resistant pathogens or the growth of new zoonotic diseases were taken up alongside concerns with cruelty and sustainability as a kind of third leg of the case for eating more plants and rolling back factory farming?  Something like this coalition seems the most promising direction in animal advocacy. We aren’t arguing anything novel; the power of coalitions is well documented in the social sciences, and most animal advocates are well aware of its value. But we are arguing that very recent developments, like the new willingness among environmentalists to take on the meat industry and the rise of One Health as the dominant paradigm for public health (despite failures to implement), are more important than generally understood.  The future will have to be collaborative Pulling these thoughts together, here is the paradigm shift we see unfolding: The animal advocacy movement has long argued the ethical case for ending factory farming and moving toward plant-based diets; now is the time to highlight the pragmatic advantage of these diets and to double down on coalitional efforts. A food system less dependent on factory farming and more plant-based is not just a way to advocate for animals; it is, among other things, a partial solution to climate change and to growing public health risks associated with factory farms.  We have emphasized coalition with environmentalists and One Health advocates in particular, but this is not meant to be exhaustive. As environmental justice activists know, the environmental and health harms we have noted fall disproportionately on BIPOC communities, making the factory farm a major driver of inequality and social injustice. This racialization of industrial farms has been especially well documented in North Carolina’s hog industry and points to the depth of other coalitional possibilities.   The environmental movement has helped make an unimpeachable case against beef and dairy, but it is the less-developed alliance with the public health sector that will seal the case against chicken and pig factory farms Unfortunately, it does not do much good to advocate for such coalitions generically as we are doing here. That is all too easy. What can do a lot of good — and what already has started a promising trend toward more plant-based eating at colleges and universities — is the pragmatic work of forging real coalitions. Ultimately, the default veg dining strategy employed by the 400 Sodexo schools was adopted because it was pragmatic. Shifting diets in this way achieved the dramatic reduction in climate impact that Sodexo sought in connection with its sustainability pledges, and it kept diners as happy with the food as ever, which was and is crucial to their bottom line. But even though plant-based defaults work, it is highly unlikely that Sodexo would have adopted them without the support it received from climate and animal activists. Even businesses like Sodexo, which made a climate pledge long before it started using plant-based defaults, often don’t appreciate the climate benefits of shifting diets or fear that it cannot be done without generating backlash.  This is one reason why advocacy remains crucial. Sodexo considered and finally pursued plant-based defaults only in the course of a partnership with two nonprofit advocacy groups, one coming out of the climate movement, Food For Climate League, and another — the organization we mentioned at the beginning of this essay that Aaron is connected to — out of the animal space, Better Food Foundation. A viable business case is not enough; it also needs champions.  The environmental-animal movement coalition that helped support the Sodexo changes shows that coalitions can work but not that they are abundant. In our experience, though there is a lot of goodwill toward collaboration on shifting diets among many animal and environmental advocates on the ground, this is still rarely reflected in meaningful organizational partnerships or resource sharing across movements. This is an entrenched situation and, despite the encouragement we’re giving, will not be easy to change. The present animal movement is not collaborative.  Choosing a vegetarian or vegan diet is an ethical ideal that is profoundly meaningful for some — we highly recommend it if you are so inclined. Jonathan’s book Eating Animals details his own journey into the ethics of eating (and was made into a film). But the animal advocacy movement’s success need not rest on the number of individuals who sign up for this admirable way of eating. What by contrast is essential to movement goals is the need to collectively reduce the consumption of animal products from factory farms. The environmental movement has helped make an unimpeachable case against beef and dairy, but it is the less-developed alliance with the public health sector that will seal the case against chicken and pig factory farming. Happily, the diet-shifting efforts at colleges and universities in the past year suggest, perhaps in a more visible way than ever before, that this is imminently possible — if we work in coalition. There are still miles to go, but the road to that almost impossibly ambitious goal of shifting diets is getting clearer. The future is collaborative.

The most ambitious goal of the animal movement has always been to eradicate factory farming and inspire people to eat more plants and fewer animals. This only makes sense, as the scale of the violence endemic to industrial farming radically dwarfs all other forms of animal suffering. Beyond the problem of the inevitable suffering involved […]

The most ambitious goal of the animal movement has always been to eradicate factory farming and inspire people to eat more plants and fewer animals. This only makes sense, as the scale of the violence endemic to industrial farming radically dwarfs all other forms of animal suffering.

Beyond the problem of the inevitable suffering involved in the slaughter of animals we consume, factory farming necessitates new forms of animal abuse such as intensive confinement, drugs that keep sick animals just alive enough to be profitable, and genetic modifications that induce diseases. (While genetic modification is often interpreted to mean direct edits to a genome, the USDA’s definition also includes selective breeding, the technique the factory farm industry has used to deform animals beyond recognition.) These harms to animals, as we will see, are tightly linked to harms to humans. 

This story is part of How Factory Farming Ends

Read more from this special package analyzing the long fight against factory farming here. This series is supported by Animal Charity Evaluators, which received a grant from Builders Initiative.

But the way forward for the animal movement may be less about swelling the ranks of vegetarians and vegans — which has long been its primary ambition — and more about identifying an overlapping consensus between social movements that center animals and those that center concerns like climate change and public health. These movements share an interest in shifting toward a more plant-based food system as never before. We should also share resources and tactics. 

Today, government at every level, from local to federal, actively promotes consuming high levels of animal products and the continued growth of factory farming; large portions of the legal system work primarily to defend industrial farms against ordinary citizens and public advocates rather than the other way around (for one powerful illustration of this, see the documentary The Smell of Money). Only a broad coalition can hope to change this. 

Increased collaboration with the public health movement will be particularly crucial in encouraging a more plant-based food system. In the short term, though, it is emerging collaborations with the environmental movement that show the most promise. The well-known lower carbon footprint of plant-based diets — as low as a quarter of the emissions of meat-heavy diets — provides a particularly powerful form of common ground.   

Let’s consider a rather extraordinary development that resulted from animal and environmental groups working together that occurred in just the last year.    

A groundbreaking experiment suggests reducing US meat eating is attainable

Starting last September, hundreds of American college and university dining halls serving about a million students began to systematically modify how they served food in ways designed to substantially increase the consumption of plants. The schools, which have in common the use of Sodexo as a food service provider but little else, were guided in part by a recent peer-reviewed study finding that the use of “plant-based defaults” could significantly shift diners’ choices toward plant-based foods. (One of us, Aaron, is on the board of and helped launch an organization that partnered with Sodexo on this experiment, but he was not personally involved in the project.)

In the three-month study, a hot meal station in three college dining halls, two in the American Northeast and one in the South, alternated between serving a plant-based and meat-based meal by default. When a plant-based entrée was the default, diners could ask for a meat meal. Depending on how conservatively the results are calculated, on average between 21.4 and 57.2 percent fewer meat-based meals were chosen when plant-based foods were the default. And, crucially, surveys found that diners remained as satisfied as ever (something that the presence of plant-based meats seemed to have helped in this study). A range of other public and private institutions — including governments, hospitals, and businesses — around the world are experimenting with similar tactics. 

Diners do not need to be ethical superheroes, or even be ethically motivated, to eat in ways more in line with their values 

The basic insight being employed here is that institutional food service providers already make decisions every day that shape what their customers choose by deciding, for example, what dish to list first on the menu, what entree to make the special, and what products to most heavily promote. We diners are already being nudged by food service providers toward more profitable foods (often animal products) every time we buy food. The strategies being employed at the 400 colleges and universities in one way or another involve a decision on the part of dining services to let concerns about health and sustainability — especially climate change — influence these existing decisions about food order, placement, and so forth. 

photo of a dining hall food station where Tofu Tiki Masala and cilantro basmati rice are served and a nearby sign says chicken tiki masala can be requested by asking the service staff.

This can be thought of as behavior architecture. Just as good physical architecture is aesthetically pleasing and makes it easy to do what we have come to that place to do, good behavior architecture in dining halls, supermarkets, and restaurants helps consumers make prosocial choices — like plant-based foods with lower climate impacts — the easiest choices. Diners do not need to be ethical superheroes, or even be ethically motivated, to eat in ways more in line with their values. 

Two issues raised here seem especially important. The first is to better understand how recent and unique the new overlapping consensus between animal and ecological concerns is and what is making it work. The second is to consider the potentially even more consequential, but less-developed, coalitional possibilities of animal and ecological advocates teaming up with the public health sector to advocate a shift towards plant-based diets and away from factory farming. 

In an era of ubiquitous factory farming, the public health sector has its own reasons to prefer a more plant-based food system — for example, the way that factory farms promote antibiotic resistance, an escalating global crisis associated with nearly 5 million annual deaths and increase the risk of zoonotic diseases like bird flu reaching pandemic proportions. Balanced plant-based diets are also widely regarded to have health advantages (especially lowering risk for heart disease), but since these benefits are well known, here we want to emphasize the distinct advantages of a more plant-based food system, beyond the general healthfulness of plant foods. 

That a more plant-based diet is better for animals isn’t enough to move policy. This same diet shift is already being used to reduce climate impacts; it could also preserve the value of antibiotics and reduce the number of new diseases we face, as well as shore up political will to transform our diets.

The climate science consensus on meat reduction

The nascent alliance between animal and environmental advocates on food system change is not simple. The two movements have often had different agendas. For most of our lives, mainstream environmentalism has not seriously engaged the problems with the food system, especially the problems posed by industrial meat. This is true despite the fact scientists for decades have documented the enormous role meat plays in climate change and virtually every other environmental crisis.      

Some of the reasons for this hesitancy are perfectly understandable: Emissions from the energy and transportation systems had proven technological solutions, which made solving emissions in those sectors comparatively straightforward. Food, by contrast, looked like a hornet’s nest. It’s hard enough to get people to focus on climate change, which until recently has felt so abstract, distant, and slow. To add into the conversation what is one of the most uncomfortable and contentious of all social issues — the ethics of eating — would likely have been an invitation to be ignored. 

But sometimes being ignored is just another way to describe being ahead of one’s time. Addressing the role of food systems in climate change was perhaps ahead of its time 20 years ago when little progress had been made in energy and transport, but no more. Recent years have seen a new willingness and a recognition of the necessity to address the climate impacts of animal products.

The highly regarded EAT-Lancet Commission, a panel of nutrition, sustainability, and agriculture experts, in 2019 concluded that even if we decarbonized everything else, if we don’t address our food system, it will be impossible to meet the emissions target set by the Paris climate agreement. Global food system studies on the interventions needed to address climate change — such as the study led by University of Oxford researcher Joseph Poore published in Science or the study published by the nonprofits GRAIN and the Institute for Agriculture and Trade Policy — consistently note the necessity of reducing meat consumption. 

Environmental policy advocates still often remain reluctant to push these conclusions in the nitty-gritty of policy work, but this seems to us the natural reluctance before one finally rips off the Band-Aid. While the study of the Sodexo schools suggests that the experience of eating fewer animals need not reduce diner satisfaction, the idea of eating fewer animals remains politically unpopular. Suggesting eating less of anything can be branded as un-American, and conservative news outlets have made a fetish of warning that environmentalists are “coming for your burgers” even before any meaningful policies to shift diets have been enacted.      

It will take considerable movement effort to transform the consensus in environmental science about the need to shift diets fully into organizational practice and policy advocacy, but we believe the case for eating more plants is now so well established that there is no turning back. Advocates in the environmental space who press for meat reduction will still often find themselves resisted; a quiet civil war is raging in the movement. There have been and will be ups and downs in that war, but we believe an invisible threshold has been crossed and that, battle by battle, policy by policy, the environmental movement is integrating the scientific consensus that meat reduction is essential to addressing climate change and many other ecological concerns. 

The crucial third leg in the coalition against factory farming is public health

That said, even when climate change advocates do address the problems with meat, there is the possibility of serious disagreements about the role of poultry and pork. Despite a high carbon footprint compared to plant-based foods and a load of other problems, poultry and pork meat can generally be produced at a fraction of the carbon footprint of beef. This is why we so often hear from environmentalists about the desirability of reducing beef and dairy consumption in particular: By the numbers, these industries have among the worst climate footprint of any food.      

However, in terms of animal suffering, no industry is as horrific as today’s poultry industry; the pork industry is equally nightmarish, if smaller in scale (virtually all commercially available chickens and turkeys and the overwhelming majority of pig meat comes from factory farms). Modern industrial chickens have the disturbing distinction of being so genetically modified to produce more flesh and eggs that their very biology destines them to suffer from a range of diseases and incapacities (which is not to mention that it takes 100 or more individual chickens to produce as much meat as in a single cow). When climate activists suggest an overly numbers-driven approach to reducing food climate impacts, they may drive the production of more poultry and pig factory farms by recommending eating chicken or pork over beef. This is already happening

Chart showing US per capita meat consumption more than doubling over the last 50 years while beef consumption declines by a quarter.

Happily for the animal cause, though, data and research from the public health sector about the dangers of industrial poultry and pig production can ameliorate this tension. Studies show that while risks from different industries vary, if we don’t reduce animal-sourced foods, we will increase infectious disease. From the point of view of public health, the poultry industry is profoundly worrying, both because of the routine use of antibiotics that promotes antimicrobial resistance and the potential to seed a pandemic.

In recent months, the H5N1 bird flu virus, which if it mutates to be able to spread among humans could make Covid-19 seem like the common cold, has leaped from birds to cattle and has infected several US dairy workers. The extreme industrialization of both the poultry and pork industries — with their use of densely packed, genetically uniform, and immunocompromised animals — is a perfect Petri dish for cultivating the next plague.

Understanding how animal agriculture shapes human health

The meat industry plays a pivotal role in public health. Check out Future Perfect’s coverage of meat’s impact on everything from pandemic risk to failing antibiotics to nutrition: 

Just as climate activists have overlapping interests with animal advocates on diet change because of the high carbon footprint of animal products, public health advocates have overlapping interests because of the very basic biological fact that sick farmed animals not only suffer but can pose profound disease risk for human populations. The basic principle here is known in the international public health community as One Health, an approach that optimizes health outcomes by, in the words of the US Centers for Disease Control and Prevention (CDC), “recognizing the interconnection between people, animals, plants, and their shared environment.”  

One Health is de rigueur in contemporary public health contexts. It is endorsed and promoted by the CDC, the World Bank, and just about every other authoritative advocate of public health. Theoretically, One Health already guides US law and policy, yet it has very little influence when it runs up against powerful political interests. One Health advocates, like animal advocates, have to contend with the power of industry; so far, sociopolitical factors like entrenched commitments to factory farming (among others) thwart the implementation of One Health frameworks. Ultimately, this means that factory farms benefit from unchecked externalities — the public rather than industry pays the immense cost of lost drugs and the cost of managing or preventing pandemics. Of course, this at least temporarily makes reducing the consumption of animal products that much harder by making them artificially cheap. 

The current crisis of antibiotic use in the US meat industry dramatically illustrates how public health advocates struggle to rein in big meat and could benefit from coalition with the animal movement. For many decades, the scientific community, often emphasizing a One Health frame, has warned about the loss of lifesaving drugs because of the scale at which antibiotics are routinely administered to farmed animals. Despite high consumer demand for meat raised without antibiotics and government regulation of antibiotics in agriculture intensifying since the 2010s, the industry can’t quit antibiotics. In the factory farm system, sick animals are often more profitable than healthy ones, and sick animals need drugs to stay alive and to be profitable. This is why advocating for antibiotic-free meat without arguing for a change in production has ended up playing into the hands of industry. The problem has never been the drugs themselves, but the dismal conditions that necessitate them: The root problem is factory farming itself.

What if public health concerns with the creation of antibiotic-resistant pathogens or the growth of new zoonotic diseases were taken up alongside concerns with cruelty and sustainability? 

So, unsurprisingly, after a dip due to regulation starting in 2016, antibiotic use in agriculture, according to the latest FDA statistics, is ticking up again. But even this concerning growth in antibiotic sales understates the problem because a mounting body of evidence suggests that even meat labeled antibiotic-free is, illegally, often from animals that were fed drugs. A study published in Science of the US supply of antibiotic-free beef found that fully 15 percent of the meat was from animals illegally fed drugs. New evidence also suggests pork producers are using prohibited antibiotics. Despite the USDA admitting last year that antibiotic-free claims have indeed come into question, it has not yet taken corrective action.

The industry is not all-powerful, but it is often more powerful than any one social movement. Divided we are conquered. 

But what if public health advocates, who have long been frustrated with One Health being officially endorsed while being ignored in actual policy, worked in coordination with the nascent coalitions emerging between animal and climate groups? What if One Health concerns with the creation of antibiotic-resistant pathogens or the growth of new zoonotic diseases were taken up alongside concerns with cruelty and sustainability as a kind of third leg of the case for eating more plants and rolling back factory farming? 

Something like this coalition seems the most promising direction in animal advocacy. We aren’t arguing anything novel; the power of coalitions is well documented in the social sciences, and most animal advocates are well aware of its value. But we are arguing that very recent developments, like the new willingness among environmentalists to take on the meat industry and the rise of One Health as the dominant paradigm for public health (despite failures to implement), are more important than generally understood. 

The future will have to be collaborative

Pulling these thoughts together, here is the paradigm shift we see unfolding: The animal advocacy movement has long argued the ethical case for ending factory farming and moving toward plant-based diets; now is the time to highlight the pragmatic advantage of these diets and to double down on coalitional efforts. A food system less dependent on factory farming and more plant-based is not just a way to advocate for animals; it is, among other things, a partial solution to climate change and to growing public health risks associated with factory farms. 

We have emphasized coalition with environmentalists and One Health advocates in particular, but this is not meant to be exhaustive. As environmental justice activists know, the environmental and health harms we have noted fall disproportionately on BIPOC communities, making the factory farm a major driver of inequality and social injustice. This racialization of industrial farms has been especially well documented in North Carolina’s hog industry and points to the depth of other coalitional possibilities.  

The environmental movement has helped make an unimpeachable case against beef and dairy, but it is the less-developed alliance with the public health sector that will seal the case against chicken and pig factory farms

Unfortunately, it does not do much good to advocate for such coalitions generically as we are doing here. That is all too easy. What can do a lot of good — and what already has started a promising trend toward more plant-based eating at colleges and universities — is the pragmatic work of forging real coalitions. Ultimately, the default veg dining strategy employed by the 400 Sodexo schools was adopted because it was pragmatic. Shifting diets in this way achieved the dramatic reduction in climate impact that Sodexo sought in connection with its sustainability pledges, and it kept diners as happy with the food as ever, which was and is crucial to their bottom line.

But even though plant-based defaults work, it is highly unlikely that Sodexo would have adopted them without the support it received from climate and animal activists. Even businesses like Sodexo, which made a climate pledge long before it started using plant-based defaults, often don’t appreciate the climate benefits of shifting diets or fear that it cannot be done without generating backlash. 

This is one reason why advocacy remains crucial. Sodexo considered and finally pursued plant-based defaults only in the course of a partnership with two nonprofit advocacy groups, one coming out of the climate movement, Food For Climate League, and another — the organization we mentioned at the beginning of this essay that Aaron is connected to — out of the animal space, Better Food Foundation. A viable business case is not enough; it also needs champions. 

The environmental-animal movement coalition that helped support the Sodexo changes shows that coalitions can work but not that they are abundant. In our experience, though there is a lot of goodwill toward collaboration on shifting diets among many animal and environmental advocates on the ground, this is still rarely reflected in meaningful organizational partnerships or resource sharing across movements. This is an entrenched situation and, despite the encouragement we’re giving, will not be easy to change. The present animal movement is not collaborative. 

Choosing a vegetarian or vegan diet is an ethical ideal that is profoundly meaningful for some — we highly recommend it if you are so inclined. Jonathan’s book Eating Animals details his own journey into the ethics of eating (and was made into a film). But the animal advocacy movement’s success need not rest on the number of individuals who sign up for this admirable way of eating.

What by contrast is essential to movement goals is the need to collectively reduce the consumption of animal products from factory farms. The environmental movement has helped make an unimpeachable case against beef and dairy, but it is the less-developed alliance with the public health sector that will seal the case against chicken and pig factory farming. Happily, the diet-shifting efforts at colleges and universities in the past year suggest, perhaps in a more visible way than ever before, that this is imminently possible — if we work in coalition. There are still miles to go, but the road to that almost impossibly ambitious goal of shifting diets is getting clearer. The future is collaborative.

Read the full story here.
Photos courtesy of

Changes to polar bear DNA could help them adapt to global heating, study finds

Scientists say bears in southern Greenland differ genetically to those in the north, suggesting they could adjustChanges in polar bear DNA that could help the animals adapt to warmer climates have been detected by researchers, in a study thought to be the first time a statistically significant link has been found between rising temperatures and changing DNA in a wild mammal species.Climate breakdown is threatening the survival of polar bears. Two-thirds of them are expected to have disappeared by 2050 as their icy habitat melts and the weather becomes hotter. Continue reading...

Changes in polar bear DNA that could help the animals adapt to warmer climates have been detected by researchers, in a study thought to be the first time a statistically significant link has been found between rising temperatures and changing DNA in a wild mammal species.Climate breakdown is threatening the survival of polar bears. Two-thirds of them are expected to have disappeared by 2050 as their icy habitat melts and the weather becomes hotter.Now scientists at the University of East Anglia have found that some genes related to heat stress, ageing and metabolism are behaving differently in polar bears living in south-east Greenland, suggesting they may be adjusting to warmer conditions.The researchers analysed blood samples taken from polar bears in two regions of Greenland and compared “jumping genes”: small, mobile pieces of the genome that can influence how other genes work. Scientists looked at the genes in relation to temperatures in the two regions and at the associated changes in gene expression.“DNA is the instruction book inside every cell, guiding how an organism grows and develops,” said the lead researcher, Dr Alice Godden. “By comparing these bears’ active genes to local climate data, we found that rising temperatures appear to be driving a dramatic increase in the activity of jumping genes within the south-east Greenland bears’ DNA.”As local climates and diets evolve as a result of changes in habitat and prey forced by global heating, the genetics of the bears appear to be adapting, with the group of bears in the warmest part of the country showing more changes than the communities farther north. The authors of the study have said these changes could help us understand how polar bears might survive in a warming world, inform understanding of which populations are most at risk and guide future conservation efforts.This is because the findings, published on Friday in the journal Mobile DNA, suggest the genes that are changing play a crucial role in how different polar bear populations are evolving.Godden said: “This finding is important because it shows, for the first time, that a unique group of polar bears in the warmest part of Greenland are using ‘jumping genes’ to rapidly rewrite their own DNA, which might be a desperate survival mechanism against melting sea ice.”Temperatures in north-east Greenland are colder and less variable, while in the south-east there is a much warmer and less icy environment, with steep temperature fluctuations.DNA sequences in animals change over time, but this process can be accelerated by environmental stress such as a rapidly heating climate.There were some interesting DNA changes, such as in areas linked to fat processing, that could help polar bears survive when food is scarce. Bears in warmer regions had more rough, plant-based diets compared with the fatty, seal-based diets of northern bears, and the DNA of south-eastern bears seemed to be adapting to this.Godden said: “We identified several genetic hotspots where these jumping genes were highly active, with some located in the protein-coding regions of the genome, suggesting that the bears are undergoing rapid, fundamental genetic changes as they adapt to their disappearing sea ice habitat.”The next step will be to look at other polar bear populations, of which there are 20 around the world, to see if similar changes are happening to their DNA.This research could help protect the bears from extinction. But the scientists said it was crucial to stop temperature rises accelerating by reducing the burning of fossil fuels.Godden said: “We cannot be complacent, this offers some hope but does not mean that polar bears are at any less risk of extinction. We still need to be doing everything we can to reduce global carbon emissions and slow temperature increases.”

A Deadly Pathogen Decimated Sunflower Sea Stars. Look Inside the Lab Working to Bring Them Back by Freezing and Thawing Their Larvae

For the first time, scientists have cryopreserved and revived the larvae of a sea star species. The breakthrough, made with the giant pink star, gives hope the technique could be repeated to save the imperiled predator

A Deadly Pathogen Decimated Sunflower Sea Stars. Look Inside the Lab Working to Bring Them Back by Freezing and Thawing Their Larvae For the first time, scientists have cryopreserved and revived the larvae of a sea star species. The breakthrough, made with the giant pink star, gives hope the technique could be repeated to save the imperiled predator Juvenile sunflower sea stars at the Sunflower Star Laboratory in Moss Landing, California. At this phase, each is less than an inch wide, but they can grow to be more than three feet across as adults. Avery Schuyler Nunn Key takeaways: Recovering sunflower sea stars by freezing them in time Ravaged by infectious bacteria, sunflower sea stars literally wasted away across the Pacific coast of North America—and their resulting population crash destabilized kelp forest ecosystems. Scientists pioneered a cryopreservation technique on the closely related giant pink star, raising hopes that a bank of frozen sunflower star larvae could one day be thawed in the same way and released into the wild. Along a working California harbor, where gulls wheel over weathered pilings and the old Western Flyer—the ship John Steinbeck once sailed to the Sea of Cortez—sits restored in its berth, researchers buzz about in a modest lab tucked between warehouses and boatyards. Inside, amid the hiss of pumps and the faint smell of brine from seawater tables, a scientist lifts a small vial from a plume of liquid nitrogen, its frosted casing holding the tiniest flicker of hope for a species on the brink. Each of the 18 vials contains between 500 and 700 larval giant pink sea stars. At this stage, they are tiny specks suspended in seawater, invisible to the naked eye. These particular larvae have been cryopreserved and stored at roughly minus 180 degrees Celsius since March. At the Sunflower Star Laboratory (SSL) in Moss Landing, California, scientists thawed the larval pink sea stars and coaxed them to successfully develop into juveniles this summer—a first for any sea star species. In October, the scientists thawed another batch of larvae from the same cohort to test larval growth and survival under different freezing conditions and thawing protocols. The breakthrough, however, isn’t really about the giant pink star, a species that’s common in the wild. Instead, these larvae serve as a crucial stand-in for the far more imperiled sunflower sea star (Pycnopodia helianthoides)—a vanishing species for which larvae are precious, limited and increasingly difficult to obtain. Perfecting cryopreservation methods on pink stars—ensuring they can survive freezing, resume feeding and grow into juveniles—lays the scientific groundwork for facilitating a return of Pycnopodia. The contents of a thawed vial are placed under a microscope to assess viability of the larvae. Avery Schuyler Nunn The discovery arrives at a precarious time, as sunflower stars have disappeared at a pace rarely seen in marine ecosystems. As a mysterious pathogen ravaged their population along the western shores of North America beginning in 2013, the creatures collapsed from an estimated six billion individuals to functional extinction in parts of their range—all within just a few years. Their loss left kelp forests with dramatically fewer predators, destabilizing ecosystems across the Pacific coast and allowing urchins to proliferate and graze formerly lush underwater canopies into barren rock. Now, scientists hope that “freezing” their larvae will offer a new avenue for bringing the species back. “Cryopreservation is particularly important on the population level when thinking about recovery for this endangered species, because it had major population losses,” says Marissa Baskett, an environmental scientist at the University of California, Davis, who was not involved in the project. The process lets scientists preserve the sea stars’ existing genetic diversity for future reintroduction to the wild, she adds. “Especially given the uncertainty about different disease outbreaks, having that stock to return to is incredibly valuable.” A mysterious and “complete collapse” Sunflower sea stars have long lived in abundance up and down the rugged Pacific coast—from Alaskan archipelagoes to Baja California. The 24-limbed echinoderms sprawled across the seafloor in shades of ochre, crimson and violet. Among the fastest-moving and largest of all sea stars—capable of stretching nearly three feet across—these radiant predators coursed through kelp forests, voraciously hunting purple sea urchins and preventing them from over-grazing on the holdfasts that root towering golden canopies of kelp. An adult sunflower sea star has 24 limbs and can be more than three feet wide. This one was photographed off Point Dume State Beach near Los Angeles. Brent Durand via Getty Images “In Northern California and Oregon, there historically would have been multiple keystone predators within the kelp forest ecosystem who are punching on purple urchins and keeping their population in check,” says Reuven Bank, board chair of SSL. “But the southern sea otter was extirpated across its historic range, so we were left with sunflower stars being the last major keystone predator of purple urchins across over 100 miles of coastline.” “And sunflower stars didn’t just eat urchins, they scared them,” Bank adds. “Urchins can smell a sunflower star approaching, and in healthy kelp forests they hide more and graze less. Even without consuming them, sunflower stars helped keep urchin behavior, and therefore kelp forests, in balance.” Then, in June 2013, tidepool monitors along Washington’s Olympic Peninsula documented an unprecedented sight. The once-sturdy sea stars had turned soft, pale and contorted, their arms curling and detaching from their bodies. By late summer, the same mysterious affliction had surfaced in British Columbia, and it began sweeping both north and south with startling speed. The emerging epidemic, which caused the invertebrates to literally disintegrate, would soon be known as sea star wasting disease. An infamous marine heatwave—nicknamed “The Blob”—had settled over the Pacific by 2014, thrusting the coast into a fever. Ocean temperatures spiked, likely speeding up the disease progression in already stressed sea stars and leading to higher mortality. In the warm, stagnant water, infected sunflower stars dissolved at an eerily rapid pace, leaving behind ghost-white films of bacterial mass where the vibrant predators had been just days before. “You’d have apparently healthy stars basically melt away into puddles of goo within 48 hours,” says Andrew Kim, lab manager at SSL. “It happened so quickly, and I don’t think folks were prepared for the ensuing ecosystem shift. You don’t often expect diseases to come through and totally reshape ecosystem dynamics within such a short period. But that’s what we saw.” Without sunflower sea stars to keep those spiny purple urchins in check, the balance began to falter, setting the stage for an unprecedented chain reaction. Urchin populations skyrocketed, grazing on kelp without limits, and once-thriving underwater forests collapsed into barren rock. A dense group of purple sea urchins, which exploded in population after the sunflower sea stars disappeared, photographed near Mendocino Headlands State Park, north of San Francisco. Brent Durand via Getty Images In California, with 99 percent loss, sunflower sea stars are now considered functionally extinct. “Even though there may be a few remnant individuals left, they can no longer fulfill their historic role in the ecosystem,” Bank says. As sunflower stars unraveled in the wild, another species—its thick-armed cousin, the giant pink star—offered an unexpected foothold for hope. The pink stars share a nearly identical geographic range and life history with sunflower stars, and crucially, their larvae can be raised in aquaria. If scientists could learn to freeze and revive the pink star in its early life stages, they wondered, could that knowledge become a lifeline for the sunflower star? That’s where the small team in Moss Landing stepped in. Freezing sea stars for the future What these scientists did was something no one had ever pulled off with a sea star. Working with giant pink stars, researchers spawned adults at the Aquarium of the Pacific in Long Beach, California, fertilized their gametes to produce thousands of larvae, and shipped those microscopic bodies to the Frozen Zoo—a cryopreserved archive of creatures operated by the San Diego Zoo Wildlife Alliance. There, reproductive scientists plunged the larvae into liquid nitrogen, cooling them to extremely low temperatures and pausing their cells’ biological activity. The larvae, essentially frozen in time, were shielded from ice crystal damage with special cryoprotectant mixtures. Sunflower Star Laboratory researchers remove a vial of pink star larvae from an insulated cooler at around minus 180 degrees Celsius in preparation for thawing. Avery Schuyler Nunn After months in this suspended state, the larvae were sent to the Sunflower Star Laboratory where Carly Young, a San Diego Zoo Wildlife Alliance scientist who advances cryopreservation and reproductive-rescue tools, led the team in thawing the vials. She had fine-tuned the ideal way to keep the larvae alive as they returned to real-world temperatures, carefully testing more than 100 “recipes” with various warming rates, cryoprotectant dilutions and rehydration steps. The pink star larvae not only survived thawing, but have thus far lived all the way through metamorphosis into juveniles. Scientists watched the little stars settle spontaneously along the bottom of their beakers just 19 days after revival. The success prompted the team to apply the same cryopreservation protocols to sunflower star larvae from the Alaska SeaLife Center. The larvae will be frozen in perpetuity, creating the first-ever cryopreserved archive of the species—like a seed bank, but for the baby sea stars. “A famous quote from the ’70s, when the Frozen Zoo in San Diego was established, was, ‘You must collect things for reasons you don’t yet understand,’” says Ashley Kidd, conservation project manager at SSL. “We don’t know when the other shoe is going to drop and what populations are going to look like as the planet changes. So, rather than chasing ghosts around the ocean floor, we really focused on what we can do with animals that are currently under human care somewhere.” While cryopreservation itself isn’t a ready-made restoration tool, it opens the door to conserving genetic diversity of a species and banking rare lineages for potential reintroduction to the wild. In the 1970s and 1990s, researchers began testing cryopreservation of marine invertebrates with sperm and larvae, establishing the basic protocols that this team could apply to sea stars. The breakthrough doesn’t restore kelp forests by itself, but the SSL scientists note that cryopreservation creates something the conservation community has desperately needed: time. Time to hold onto genetic diversity, time to refine captive rearing and time to prepare for future reintroduction at scales big enough to matter. The ultimate test, the researchers say, will be translating the thawing process to sunflower sea stars. Carly Young, at the Sunflower Star Laboratory, looks for movement in the young sea stars. Avery Schuyler Nunn Just this summer, scientists uncovered a piece of the puzzle that had eluded them for more than a decade: the pathogen behind sea star wasting disease. In a four-year international effort, researchers traced the outbreak to a strain of the marine bacterium Vibrio pectenicida. When cultured and injected into healthy sea stars, it reproduced the telltale symptoms—softening arms, rapid disintegration and death within days. The finding, published in Nature Ecology and Evolution in August, gives recovery teams a way to test for the pathogen in labs and hatcheries, tighten quarantine measures and understand disease risks before returning captive-bred sea stars to the Pacific. “It’s massively important to know what to look for, and the fact that we are now able to test for this disease is going to be critical in advancing our ability to move forward with reintroductions and continuing the research,” notes Kim. “We’ve already been able to take fluid samples from all of our stars and get them analyzed for the presence of Vibrio pectenicida, so we’ve mobilized very quickly on the heels of development.” Paired with this new diagnostic clarity, advances in cryopreservation offer a second front in the effort to save the species. Frozen larvae can be stored for decades and offer flexibility for selective breeding of disease-tolerant traits, notes the team. Cryopreservation adds another tool to the scientists’ toolbox as they fight to prevent the species—and, in turn, its ecosystem—from wasting away. “Bringing back sunflower stars,” Bank says, “is the single-most important step we can take toward restoring kelp forest balance.” Get the latest Science stories in your inbox.

Archaeologists Are Unraveling the Mysteries Behind Deep Pits Found Near Stonehenge

Based on a comprehensive study, researchers are now convinced the shafts were human-made, likely dug during the Late Neolithic period roughly 4,000 years ago

Archaeologists Are Unraveling the Mysteries Behind Deep Pits Found Near Stonehenge Based on a comprehensive study, researchers are now convinced the shafts were human-made, likely dug during the Late Neolithic period roughly 4,000 years ago Sarah Kuta - Daily Correspondent December 10, 2025 9:59 a.m. The pits are evenly spaced around a large circle. University of Bradford In 2020, archaeologists in the United Kingdom made a surprising discovery. At Durrington Walls, a large Neolithic henge not far from Stonehenge, they found more than a dozen large, deep pits buried under layers of loose clay. The pits are mysterious. Each one measures roughly 30 feet wide by 15 feet deep, and together they form a mile-wide circle around Durrington Walls and neighboring Woodhenge. They also appear to be linked with the much older Larkhill causewayed enclosure, built more than 1,000 years before Durrington Walls. For the last few years, archaeologists have been puzzling over their origins: Were they dug intentionally by human hands? Were they naturally occurring structures, like sinkholes? Or is there some other possible explanation for the existence of these colossal shafts? Quick fact: The purpose of Durrington Walls While Stonehenge is thought to have been a sacred place for ceremonies, Durrington Walls was a place where people actually lived. In a new paper published in the journal Internet Archaeology, archaeologists report that they have a much better understanding of the pits’ purpose, chronology and environmental setting. And, now, they are confident the shafts were made by humans. “They can’t be occurring naturally,” says lead author Vincent Gaffney, an archaeologist at the University of Bradford, to the Guardian’s Steven Morris. “It just can’t happen. We think we’ve nailed it.” Chris Gaffney, an archaeologist at the at the University of Bradford, surveys the ground near Durrington Walls. University of Bradford For the study, researchers returned to the site in southern England and used several different methods to further analyze the unusual structures. They used a technique known as electrical resistance tomography to calculate the pits’ depths, and radar and magnetometry to suss out their shapes. They also took core samples of the sediment, then ran the soil through a variety of tests. For instance, they used optically stimulated luminescence to determine the last time each layer of soil had been exposed to the sun. They also looked for traces of animal or plant DNA. Astonishing' Stonehenge discovery offers new insights into Neolithic ancestors. Together, the results of these analyses indicate humans must have been involved, which suggests the pits could be “one of the largest prehistoric structures in Britain, if not the largest,” Gaffney tells the BBC’s Sophie Parker. Researchers suspect the circle pits were created by people living at the site over a short period of time during the Late Neolithic period roughly 4,000 years ago. They were not “simply dug and abandoned” but, rather, appear to have been part of a “structured, monumental landscape that speaks to the complexity and sophistication of Neolithic society,” Gaffney says in a statement. For example, the pits are fairly evenly spaced around the circle, which suggests their Neolithic creators were measuring the distances between them somehow. “The skill and effort that must have been required to not only dig the pits, but also to place them so precisely within the landscape is a marvel,” says study co-author Richard Bates, a geophysicist at the University of St Andrews, in a statement. “When you consider that the pits are spread over such a large distance, the fact they are located in a near perfect circular pattern is quite remarkable.” Researchers used multiple methods to investigate the pits at Durrington Walls. University of Bradford But who dug the pits? And, perhaps more importantly, why? Archaeologists are still trying to definitively answer those questions, but they suspect the shafts were created to serve as some sort of sacred boundary around Durrington Walls. Their creators may also have been trying to connect with the underworld, per the Guardian. “They’re inscribing something about their cosmology, their belief systems, into the earth itself in a very dramatic way,” Gaddney tells the BBC. Get the latest stories in your inbox every weekday.

Is red meat bad for you? Limited research robs us of a clear answer.

We’d all appreciate more definitive guidance. Eating a varied diet is a wise move while we wait.

Over and over, we ask the question: Is Food X good or bad for you? And, over and over, belief in the answer — whether it’s yes or no — is held with conviction totally out of proportion with the strength of the evidence.Today’s illustration: red meat. It has become one of the most-disputed issues in food. It’s so polarizing that some people decide to eat no meat at all, while others decide to eat only meat. It’s poison, or it’s the only true fuel.The latest salvo in the Meat Wars was kicked off by a new report that outlines the optimal diet for both people and planet. The EAT-Lancet Report comes down hard on red meat; its recommended daily intake is a mere 14 grams — that’s half an ounce.Read on, and the news gets worse: “Because intake of red meat is not essential and appears to be linearly related to higher total mortality and risks of other health outcomes in populations that have consumed it for many years, the optimal intake may be zero.”Note that word: “related.” It’s the source of the problem with the report and its recommendation.The EAT-Lancet report, by researchers from 17 countries, bases its recommendation solely on observational data. When you do that, meat comes out looking pretty bad. In study after study, people who report eating a lot of meat have worse health outcomes than people who eat little. Meat-eating correlates with increased risk of heart disease, some cancers and all-cause mortality.But, as always with observational research that attempts to connect the dots between diet and health, the key question is whether the meat itself, or something else associated with a meat-heavy lifestyle, is actually causing the bad outcomes.That’s a hard question to answer, but there are clues that people who eat a lot of meat are very different from people who eat a little.Let’s look at a study, published in JAMA Internal Medicine, cited by the EAT-Lancet report; it has a convenient demographic summary. According to it, people in the top one-fifth of meat eaters are different from people in the bottom fifth in a lot of important ways: They weigh more, they’re more likely to smoke, they’re not as well-educated, they get less exercise, and they report lower intakes of fruit, vegetables and fiber. On the plus side, they report drinking less alcohol. But other than that, we’re looking at a litany of markers for a lifestyle that’s not particularly health-conscious.So, to suss out whether it’s the meat that’s raising disease risk, you have to somehow correct for any of the differences on that list — and most of that information also comes from observational research, so even the confounders are confounded.Then there are the things you can’t correct for. Sleep quality, depression and screen time, for example, all correlate with some of the same diseases meat correlates with, but most studies have no information on those.All this confounding explains one of my all-time favorite findings from observational research. It comes from the same study the demographics came from (analyzed in a 2015 paper). Sure enough, the people who ate the most meat were more likely to die of cancer and heart disease, but they were also more likely to die in accidents. And the biggest difference came from the catchall category “all others,” which invariably includes causes of death that have nothing to do with meat.Basically, there’s a very simple problem with relying on observational research: People who eat a lot of meat are very different from people who eat less of it. The meat definitely isn’t causing the accidental deaths (unless, perhaps, they’re tragic backyard grill mishaps), and it isn’t causing at least some of the “all others” deaths, so we know that heavy and light meat-eaters are different in all kinds of ways.That’s where controlled trials come in.In a perfect world, we could figure this out by keeping a large group of people captive for a lifetime, feeding half of them meat, and seeing what happens. Okay, maybe that’s not a perfect world, but it would be the best solution to this particular problem.Instead, we have trials that are short-term (because of logistics and cost), and necessarily rely on markers for disease, rather than the disease itself. For that to be useful, you need a marker that’s a reliable indicator. For a lot of diseases — including cancer — those are hard to come by. For heart disease, we have a good one: low-density lipoprotein (LDL) cholesterol. So, most of the controlled trials of meat-eating focus on heart disease.If you spend some time reading those trials (and I did, so you don’t have to), you find that most of them show some increase in LDL cholesterol, although it’s generally small.A 2025 analysis of 44 controlled trials on meat found that the only ones showing positive cardiovascular outcomes had links to the meat industry, and even then, only about one in five came out positive. Of the independent studies, about three-quarters showed negative outcomes, and the remaining one-quarter was neutral.This isn’t surprising. Red meat contains saturated fat, and we have countless trials that demonstrate sat fat’s ability to raise LDL. But if the meat you eat is relatively lean, that effect is going to be small.The lesson here is that we don’t have a lot of good evidence on meat and health. The observational evidence is hopelessly confounded, and the evidence from clinical trials is woefully limited. There’s so much we simply don’t know. There may be other ways meat raises risk (leading to over-absorption of heme iron and stimulating the production of TMAO, or trimethylamine N-oxide), but there’s little definitive evidence for them. And, of course, there’s the question of what you eat instead. If you’re eating red meat instead of, say, instant ramen, that may be an improvement. If, instead, you’re cutting back on your lentils, not so much.As always, the single-most important thing to remember about nutrition is that what we know is absolutely dwarfed by what we don’t know. Which means that, if you’re making decisions based on what we do know, you could very well be wrong.So what’s an eater to do? Meat is a nutritious food. In fact, animal foods are the only natural sources of a vitamin we need — B12 — which is an indication that we evolved with meat and dairy as part of our diet. It’s very hard to know whether eating some lean meat leads to better outcomes than eating no meat, but I think some meat is a good hedge against all that uncertainty. (The ethical and environmental concerns are also important, but for today let’s focus on health.)But plant foods are also nutritious. And eating a wide variety of them is also a good hedge against uncertainty. Which means the carnivore diet — all meat, all the time! — is a pretty bad bet.Unfortunately, “uncertainty” is not a word that features prominently in the Meat Wars. Instead, we have an unappetizing combination of nastiness and sanctimony, with each camp convinced that the truth and the light are on their side.Not that this is a metaphor for our times or anything.

New Wildlife Books for Children and Teens (That Adults May Find Interesting Too)

These books for young readers will delight and encourage interest in mammals, insects, octopuses, and other creatures in our shared environment. The post New Wildlife Books for Children and Teens (That Adults May Find Interesting Too) appeared first on The Revelator.

Creating excitement about our amazing planet in young people has never been more important. A pack of new books make environmental science fun and fascinating, teaching children, teens, and even some adults just how diverse and rich our planet’s wildlife and their habitats are to behold. Reading them can encourage us all to become better guardians of the Earth. We’ve adapted the books’ official descriptions below and provided links to the publishers’ sites, but you should also be able to find these books in a variety of formats through your local bookstore or library. Insectopolis By Peter Kuper Award-winning cartoonist Peter Kuper transports readers through the 400-million-year history of insects and the remarkable entomologists who have studied them. This visually immersive work of graphic non-fiction dives into a world where ants, cicadas, bees, and butterflies visit a library exhibition that displays their stories and humanity’s connection to them throughout the ages. Layering history and science, color and design, it tells the remarkable tales of dung beetles navigating by the stars, hawk-size prehistoric dragonflies hunting prey, and mosquitoes changing the course of human history. Read our interview with Kuper. They Work: Honey Bees, Nature’s Pollinators By June Smalls and illustrator Yukari Mishima The newest addition to June Smalls’s nature series, this is a gorgeous nonfiction picture book about life for a hive of honeybees, complete with factoids. Readers learn about the beehive queen, who fights to be queen from the moment she breaks out of her cell. Her job is important, but a hive is only successful if many, many bees are working together. Experience the life cycle of the honeybee up close and personal with this striking picture book. Told in a poetic style along with fun facts on each page for older readers wanting a deeper dive, this book is a beautiful exploration of life inside a beehive — as well as the dangers and predators bees face in the world, including humans. Bison: Community Builders and Grassland Caretakers By Frances Backhouse Bison are North America’s largest land animals. Some 170,000 wood bison once roamed northern regions, while at least 30 million plains bison trekked across the rest of the continent. Almost driven to extinction in the 1800s by decades of slaughter and hunting, this ecological and cultural species supports biodiversity and strengthens the ecosystems around it. This book celebrates the traditions and teachings of Indigenous peoples and looks at how bison lovers of all backgrounds came together to save these iconic animals. Learn about the places where bison are regaining a hoof-hold and meet some of the young people welcoming them back home. Many Things Under a Rock: The Mysteries of Octopuses by David Scheel and Laurel ‘Yoyo’ Scheel This compelling middle-grade adaptation dives deep into the mysteries of one of our planet’s most enigmatic animals. Among all the ocean’s creatures, few are more captivating — or more elusive — than the octopus. Marine biologist David Scheel investigates these strange beings to answer long-held questions: How can we learn more about animals whose perfect camouflage and secretive habitats make them invisible to detection? How does an almost-boneless package of muscle and protein defeat sharks, eels, and other predators while also preying on the most heavily armored animals in the sea? How do octopuses’ bodies work? This fascinating book shows young readers how to embrace the wisdom of the unknown — even if it has more arms than expected. Animal Partnerships: Radical Relationships, Unlikely Alliances, and Other Animal Teams By Ben Hoare and Asia Orlando Discover partnerships from across the animal kingdom with unexpected animal teams around the world who thrive in the wild as they defend, feed, and plot with each other to survive. Friendly, informative explanations are paired with striking photographs and colorful illustrations to make every page captivate the imagination. This unique animal book for children offers impressive facts about previously unknown animal behaviors that are guaranteed to wow adults and children alike. Conker and the Monkey Trap By Hannah Peckham Deep in the jungle, a chameleon named Conker finds two animals in need of his help. Though he first wants to run and hide, he remembers what his mom taught him about being kind and helpful to others. Once Conker saves Sanjeet the lost lorikeet from a puddle, the two of them come across a monkey caught in a trap. Conker and his new friend work together to save the day. This sweet rhyming story will teach young readers the value of friendship and helping those in need. There are plenty of points for discussion and those are aided by the probing questions at the back of the book and the various activities. Mollusks By Kaitlyn Salvatore From the Discover More: Marine Wildlife Series. Not all marine wildlife lives completely underwater. While some mollusks do, other species live both above and below the water’s surface. As readers learn about the different classes of mollusks, they uncover how a mollusk’s body allows it to do amazing things, learning about the unique ways different mollusk species, from slugs to squid to clams, contribute to their environments. Their lifestyles, diet, and the threats to their survival come to life through vivid photographs and age-appropriate text. Becoming an Ecologist: Career Pathways in Science By John A. Wiens What influences a person’s decision to pursue a career in science? And what factors determine the many possible pathways a budding scientist chooses to follow? John A. Wiens traces his journeys through several subfields of ecology — and gives readers an inside look at how science works. He shares stories from his development as an ornithologist, community ecologist, landscape ecologist, and conservation scientist, recounting the serendipities, discoveries, and joys of this branching career. Wiens explores how an individual’s background and interests, life’s contingencies, the influences of key people, and the culture of a discipline can all shape a scientist’s trajectory. This book explores why ecologists ask the questions they do, how they go about answering them, and what they do when the answers are not what they expected. Bringing together personal narrative with practical guidance for aspiring ecologists, this book provides a window onto a dynamic scientific field — and inspiration for all readers interested in building a career by following their passion for the natural world, presented in an enticing way for young professionals and students. Enjoy these engaging reads and get young friends and family members involved with activities that support our environment and wildlife. We hope you and your children and grandchildren will be motivated to protect and reclaim our environment through these remarkable books. And there’s more to come: We’ll cover more books for young readers in the months ahead. For hundreds of additional environmental books — including many for kids of all ages — visit the Revelator Reads archives. The post New Wildlife Books for Children and Teens (That Adults May Find Interesting Too) appeared first on The Revelator.

Suggested Viewing

Join us to forge
a sustainable future

Our team is always growing.
Become a partner, volunteer, sponsor, or intern today.
Let us know how you would like to get involved!

CONTACT US

sign up for our mailing list to stay informed on the latest films and environmental headlines.

Subscribers receive a free day pass for streaming Cinema Verde.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.