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Sparrow Spared, Cactus Extinct, and More Links From the Brink

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Friday, July 26, 2024

Earlier this month I visited some friends at their home on the banks of the Columbia River — a house that could soon be under the Columbia River due to climate change and sea-level rise. That same week we got news about Hurricane Beryl causing destructive floods around the United States, along with devastating floods in Brazil, India, China, and Kenya. Other floods this month caused destruction and fatalities in Liberia, Afghanistan, Indonesia, and several other U.S. states. Is it any wonder that the sound of dripping water plunges me into a panic attack? Welcome to Links From the Brink. Best News of the Month: When I last wrote about the Florida grasshopper sparrow (Ammodramus savannarum floridanus) in 2018, the critically endangered bird species had experienced a devastating population crash, leaving fewer than 100 individuals in the wild. As one conservationist told me at the time, “This is going to be North America’s next extinct bird if we do nothing.” Well, we did do something. Some of the last birds were brought into captivity before they could die out, and even since then they’ve been breeding like there’s no tomorrow. As a result, they have a tomorrow. This month the Florida Fish and Wildlife Commission and partner organizations released their 1,000th captive-bred grasshopper sparrow into the wild. This seems to indicate that these rare birds have been saved from what just a few years ago seemed like an extinction in the making. There’s a lesson in this amazing milestone: “These little birds represent a big beacon of hope that our commitment, partnership and holistic approach can save vulnerable wildlife from the brink of extinction,” as Fish and Wildlife Foundation of Florida president Andrew Walker told The Guardian. Of course, all the captive breeding in the world can’t save a species if it has nowhere to live. Florida remains one of the most development-hungry places in the United States, and grasshopper sparrows’ habitat still needs protection and restoration. But 1,000 birds in six years is an amazing achievement, and it’s one worthy of celebration and emulation. More Good News That May Have Fallen Through the Cracks: Lynx from the brink: The Iberian lynx (Lynx pardinus), once critically endangered, has recovered thanks to decades of intense conservation effort. The IUCN last month reassessed the species as merely “vulnerable to extinction.” In 2005 the lynx population had fallen to an estimated 84 mature cats; the most recent count put them at a healthy (but still risky) 648. The small predators benefitted from efforts to increase previously overhunted rabbit populations, which, once restored, finally gave the lynx plenty to eat and thrive. The IUCN warns, though, that another rabbit crash, a disease, or high mortality from roads could quickly undo this conservation victory. Wolves: When wolves returned to Washington state in 2008, many hunters bemoaned that white-tail deer populations would suffer. Well, guess what — it didn’t happen. New research shows that wolves have had a minimal effect on deer in the Evergreen State — far below that of cougars (which also get a bad rap in WA) and habitat loss (i.e., development — the bane of communities throughout the West as people flock to this part of the country). Meanwhile Washington rejected a push to remove state endangered-species status for wolves and lowered its previously lax cougar-hunting quotas to more sustainable levels. Conservationists praised both decisions. We imagine wolves and mountain lions were pretty happy, too. Europe: After two years of debate, the European Union passed its Nature Restoration Law last month — which, according to news site Euractiv, “will set legally binding targets to restore 20% of the EU’s degraded land and sea ecosystems by 2030 and all ecosystems by 2050.” The bill got watered down a bit (farmers get a bit of a pass), but this seems like a good model for other 30×30 goals. (Speaking of which, six years is still a pretty tight deadline … ) Sued: A new report finds that the number of companies facing climate-related lawsuits keeps rising dramatically — and that most of these corporations are losing in court. Most of the recent lawsuits target so-called “climate-washing” — a willful misrepresentation of their progress toward promised climate goals. (The lessons: Lies cost you $$$.) Fined: More losing: Marathon Oil just got socked with a $64.5 million fine for Clean Air Act violations at the Fort Berhold Indian Reservation in North Dakota, in the heart of the Bakken shale oil fields. The company must also pay another $177 million toward reducing its future emissions. General Motors, meanwhile, must pony up $146 million in fines because its vehicles emitted at least 10% more carbon dioxide than their compliance reports claimed. (Either of these items could actually go in the “bad news” category, since the spewing of greenhouse gasses and other pollutants went on so long before either company got caught and punished, but we’ll leave them in with the other wins for now as a warning to other gasbag corporations.) Fined, part 2: French regulators this month fined conservative broadcaster CNews €20,000 (about $22,000) for allowing a pundit to spread climate skepticism (aka disinformation) without editorial follow-up or rebuttal. I’ll admit, as an advocate of free speech and the free press, I have doubts about this approach to forcing balance from news outlets. For one thing, it seems the right wing could have weaponized this approach to water down good climate reporting if they’d come to power in France in this month’s narrowly won elections. Still, I’m intrigued and wonder if this could help stem the tide of further disinformation or if it will just cause pundits to double down on their lies. (Probably the latter, alas.) Spa day: “Frog saunas” could help an endangered Australian species, the green and golden bell frog (Ranoidea aurea), recover from the deadly chytrid fungus, which has caused dozens of amphibian extinctions over the past few years. (This technique hasn’t proven helpful for other species, unfortunately.) Frogs enjoy their day in the sun. Photo courtesy Macquarie University Vroom vroom: Another new report finds that rural families are saving thousands of dollars a year with electric vehicles. (Yes, these are the same rural families who many people assumed would resist transitioning away from gas-powered cars, trucks, and farm equipment. Shows what the “experts” know.) Renewables: China is building twice as much renewable energy (specifically wind and solar) as every other country combined. (How do you say “This should light a fire under everyone else’s ass” in a carbon-neutral manner?) (Seriously though, I don’t want to blindly praise China for this; its environmental record is terrible. But so is ours, so c’mon folks, catch up.) And finally, a peak: Even fossil-fuel companies predict the world will hit peak oil demand next year. They see the writing on the wall (and the lawsuits in the wings?). Worst News of the Month: Getting back to that theme of flooding, the United States just lost its first species due to sea-level rise: the Key Largo tree cactus (Pilosocereus millspaughii). Despite its geographically based monicker, this rare cactus grows on a handful of scattered islands in the Caribbean. But it’s no longer found in its namesake Key Largo — storm surges inundated the limestone outcrop where it once grew, increasing salt levels beyond what the plants could tolerate. The storms also washed away a lot of soil, which is kind of a basic need for plants. It wasn’t just the salt water that caused problems. These cacti stored fresh water in their bodies, which then became a source of hydration for thirsty animals when the coasts became inundated with undrinkable sea water. The cactus declined quickly amidst this one-two-three punch. In 2021 the Key Largo population — previously described as “thriving” — had deteriorated to just six stands. This month scientists announced that even those last individuals had disappeared. But the species still exists on other islands, and scientists harvested the last Key Largo plants’ flowers and fruits in 2021 to cultivate them in a greenhouse setting. So far they’re doing fine, but the chance of replanting them in their native habitat appears slim. This isn’t a full-on species extinction, but it is a local extinction caused by sea-level rise, the first of its kind identified to date in the United States. And it could be a portent of things to come, as botanist Jennifer Possley said in a press release: “Unfortunately, the Key Largo tree cactus may be a bellwether for how other low-lying coastal plants will respond to climate change.” That said, I’m going to nudge this back into the “kinda-good” category, because at least scientists recognized the problem in time, saved what they could, and took the opportunity to warn us about future threats. That’s the type of proactive conservation that we should all aspire to and celebrate, even if it’s a part of the ongoing extinction crisis. Bad News Quick Hits: (Sorry. Let’s not dwell, but let’s not look away, either.) Chevron The Supreme Court in general Fiberglass in oysters and mussels 10.3 billion people by 2084? Protestors jailed Bitcoin = crashed power grids? The last ‘akikiki? (This breaks my heart.) Coal consumption could go up next year? Quote of the Month: “Inside your trash can is the possibility to change the world if you apply some creativity and some love. All trash is treasure.” — Troll artist Thomas Dambo, in The Washington Post   View this post on Instagram   A post shared by Thomas Dambo (@thomasdambo) That’s it for this edition of Links From the Brink. We’ll be back in a month or two with another roundup of under-the-radar news stories. Until then, keep an eye on the 2024 election, watch out for heat waves and wildfire smoke (not to mention floods), and check in on your neighbors in need (both human and wild). Meanwhile, mark your calendars for International Owl Awareness Day on Aug. 4, World Krill Day on Aug. 11, Panamanian Golden Frog Day on Aug. 14, and (my favorite) International Orangutan Day on Aug. 19. What will you be watching in the months ahead? Scroll down to find our “Republish” button The post Sparrow Spared, Cactus Extinct, and More Links From the Brink appeared first on The Revelator.

This month’s best and worst environmental stories also include a rebounding lynx, a climate lawsuit boom, and a spa for frogs. The post Sparrow Spared, Cactus Extinct, and More Links From the Brink appeared first on The Revelator.

Earlier this month I visited some friends at their home on the banks of the Columbia River — a house that could soon be under the Columbia River due to climate change and sea-level rise.

That same week we got news about Hurricane Beryl causing destructive floods around the United States, along with devastating floods in Brazil, India, China, and Kenya. Other floods this month caused destruction and fatalities in Liberia, Afghanistan, Indonesia, and several other U.S. states.

Is it any wonder that the sound of dripping water plunges me into a panic attack?

Welcome to Links From the Brink.

Best News of the Month:

When I last wrote about the Florida grasshopper sparrow (Ammodramus savannarum floridanus) in 2018, the critically endangered bird species had experienced a devastating population crash, leaving fewer than 100 individuals in the wild. As one conservationist told me at the time, “This is going to be North America’s next extinct bird if we do nothing.”

Well, we did do something. Some of the last birds were brought into captivity before they could die out, and even since then they’ve been breeding like there’s no tomorrow. As a result, they have a tomorrow. This month the Florida Fish and Wildlife Commission and partner organizations released their 1,000th captive-bred grasshopper sparrow into the wild. This seems to indicate that these rare birds have been saved from what just a few years ago seemed like an extinction in the making.

There’s a lesson in this amazing milestone: “These little birds represent a big beacon of hope that our commitment, partnership and holistic approach can save vulnerable wildlife from the brink of extinction,” as Fish and Wildlife Foundation of Florida president Andrew Walker told The Guardian.

Of course, all the captive breeding in the world can’t save a species if it has nowhere to live. Florida remains one of the most development-hungry places in the United States, and grasshopper sparrows’ habitat still needs protection and restoration. But 1,000 birds in six years is an amazing achievement, and it’s one worthy of celebration and emulation.

More Good News That May Have Fallen Through the Cracks:

Lynx from the brink: The Iberian lynx (Lynx pardinus), once critically endangered, has recovered thanks to decades of intense conservation effort. The IUCN last month reassessed the species as merely “vulnerable to extinction.” In 2005 the lynx population had fallen to an estimated 84 mature cats; the most recent count put them at a healthy (but still risky) 648.

Iberian lynx

The small predators benefitted from efforts to increase previously overhunted rabbit populations, which, once restored, finally gave the lynx plenty to eat and thrive. The IUCN warns, though, that another rabbit crash, a disease, or high mortality from roads could quickly undo this conservation victory.

Wolves: When wolves returned to Washington state in 2008, many hunters bemoaned that white-tail deer populations would suffer. Well, guess what — it didn’t happen. New research shows that wolves have had a minimal effect on deer in the Evergreen State — far below that of cougars (which also get a bad rap in WA) and habitat loss (i.e., development — the bane of communities throughout the West as people flock to this part of the country).

Meanwhile Washington rejected a push to remove state endangered-species status for wolves and lowered its previously lax cougar-hunting quotas to more sustainable levels. Conservationists praised both decisions. We imagine wolves and mountain lions were pretty happy, too.

Europe: After two years of debate, the European Union passed its Nature Restoration Law last month — which, according to news site Euractiv, “will set legally binding targets to restore 20% of the EU’s degraded land and sea ecosystems by 2030 and all ecosystems by 2050.” The bill got watered down a bit (farmers get a bit of a pass), but this seems like a good model for other 30×30 goals. (Speaking of which, six years is still a pretty tight deadline … )

Sued: A new report finds that the number of companies facing climate-related lawsuits keeps rising dramatically — and that most of these corporations are losing in court. Most of the recent lawsuits target so-called “climate-washing” — a willful misrepresentation of their progress toward promised climate goals. (The lessons: Lies cost you $$$.)

Fined: More losing: Marathon Oil just got socked with a $64.5 million fine for Clean Air Act violations at the Fort Berhold Indian Reservation in North Dakota, in the heart of the Bakken shale oil fields. The company must also pay another $177 million toward reducing its future emissions. General Motors, meanwhile, must pony up $146 million in fines because its vehicles emitted at least 10% more carbon dioxide than their compliance reports claimed. (Either of these items could actually go in the “bad news” category, since the spewing of greenhouse gasses and other pollutants went on so long before either company got caught and punished, but we’ll leave them in with the other wins for now as a warning to other gasbag corporations.)

Fined, part 2: French regulators this month fined conservative broadcaster CNews €20,000 (about $22,000) for allowing a pundit to spread climate skepticism (aka disinformation) without editorial follow-up or rebuttal.

I’ll admit, as an advocate of free speech and the free press, I have doubts about this approach to forcing balance from news outlets. For one thing, it seems the right wing could have weaponized this approach to water down good climate reporting if they’d come to power in France in this month’s narrowly won elections. Still, I’m intrigued and wonder if this could help stem the tide of further disinformation or if it will just cause pundits to double down on their lies. (Probably the latter, alas.)

Spa day:Frog saunas” could help an endangered Australian species, the green and golden bell frog (Ranoidea aurea), recover from the deadly chytrid fungus, which has caused dozens of amphibian extinctions over the past few years. (This technique hasn’t proven helpful for other species, unfortunately.)

Frogs poke out of the holes in a wall of bricks
Frogs enjoy their day in the sun. Photo courtesy Macquarie University

Vroom vroom: Another new report finds that rural families are saving thousands of dollars a year with electric vehicles. (Yes, these are the same rural families who many people assumed would resist transitioning away from gas-powered cars, trucks, and farm equipment. Shows what the “experts” know.)

Renewables: China is building twice as much renewable energy (specifically wind and solar) as every other country combined. (How do you say “This should light a fire under everyone else’s ass” in a carbon-neutral manner?)

(Seriously though, I don’t want to blindly praise China for this; its environmental record is terrible. But so is ours, so c’mon folks, catch up.)

And finally, a peak: Even fossil-fuel companies predict the world will hit peak oil demand next year. They see the writing on the wall (and the lawsuits in the wings?).

Worst News of the Month:

Getting back to that theme of flooding, the United States just lost its first species due to sea-level rise: the Key Largo tree cactus (Pilosocereus millspaughii).

Despite its geographically based monicker, this rare cactus grows on a handful of scattered islands in the Caribbean. But it’s no longer found in its namesake Key Largo — storm surges inundated the limestone outcrop where it once grew, increasing salt levels beyond what the plants could tolerate. The storms also washed away a lot of soil, which is kind of a basic need for plants.

It wasn’t just the salt water that caused problems. These cacti stored fresh water in their bodies, which then became a source of hydration for thirsty animals when the coasts became inundated with undrinkable sea water.

The cactus declined quickly amidst this one-two-three punch. In 2021 the Key Largo population — previously described as “thriving” — had deteriorated to just six stands. This month scientists announced that even those last individuals had disappeared.

But the species still exists on other islands, and scientists harvested the last Key Largo plants’ flowers and fruits in 2021 to cultivate them in a greenhouse setting. So far they’re doing fine, but the chance of replanting them in their native habitat appears slim.

This isn’t a full-on species extinction, but it is a local extinction caused by sea-level rise, the first of its kind identified to date in the United States. And it could be a portent of things to come, as botanist Jennifer Possley said in a press release: “Unfortunately, the Key Largo tree cactus may be a bellwether for how other low-lying coastal plants will respond to climate change.”

That said, I’m going to nudge this back into the “kinda-good” category, because at least scientists recognized the problem in time, saved what they could, and took the opportunity to warn us about future threats. That’s the type of proactive conservation that we should all aspire to and celebrate, even if it’s a part of the ongoing extinction crisis.

Bad News Quick Hits:

(Sorry. Let’s not dwell, but let’s not look away, either.)

Quote of the Month:

“Inside your trash can is the possibility to change the world if you apply some creativity and some love. All trash is treasure.” — Troll artist Thomas Dambo, in The Washington Post

 

View this post on Instagram

 

A post shared by Thomas Dambo (@thomasdambo)


That’s it for this edition of Links From the Brink. We’ll be back in a month or two with another roundup of under-the-radar news stories. Until then, keep an eye on the 2024 election, watch out for heat waves and wildfire smoke (not to mention floods), and check in on your neighbors in need (both human and wild).

Meanwhile, mark your calendars for International Owl Awareness Day on Aug. 4, World Krill Day on Aug. 11, Panamanian Golden Frog Day on Aug. 14, and (my favorite) International Orangutan Day on Aug. 19.

What will you be watching in the months ahead?

Scroll down to find our “Republish” button

The post Sparrow Spared, Cactus Extinct, and More Links From the Brink appeared first on The Revelator.

Read the full story here.
Photos courtesy of

It’s 12ft tall, covered in feathers and has been extinct for 600 years – can the giant moa bird really be resurrected?

Colossal Bioscience is adding the extinct animal to its revival wishlist, joining the woolly mammoth, dodo and thylacine. But scepticism is growingStanding more than three metres (10ft) high, the giant moa is the tallest bird known to have walked on Earth. For thousands of years, the wingless herbivore patrolled New Zealand, feasting on trees and shrubs, until the arrival of humans. Today, records of the enormous animal survive only in Māori oral histories, as well as thousands of discoveries of bone, mummified flesh and the odd feather.But this week, the US start-up Colossal Biosciences has announced that the giant moa has joined the woolly mammoth, dodo and thylacine, or Tasmanian tiger, on its list of animals that it is trying to bring back from the dead. The announcement has provoked public excitement – and deep scepticism from many experts about whether it is possible to resurrect the bird, which disappeared a century after the arrival of early Polynesian settlers in New Zealand about 600 years ago. Continue reading...

Standing more than three metres (10ft) high, the giant moa is the tallest bird known to have walked on Earth. For thousands of years, the wingless herbivore patrolled New Zealand, feasting on trees and shrubs, until the arrival of humans. Today, records of the enormous animal survive only in Māori oral histories, as well as thousands of discoveries of bone, mummified flesh and the odd feather.But this week, the US start-up Colossal Biosciences has announced that the giant moa has joined the woolly mammoth, dodo and thylacine, or Tasmanian tiger, on its list of animals that it is trying to bring back from the dead. The announcement has provoked public excitement – and deep scepticism from many experts about whether it is possible to resurrect the bird, which disappeared a century after the arrival of early Polynesian settlers in New Zealand about 600 years ago.A moa as imagined by the German artist Heinrich Harder, best known for his depictions of extinct animals, though the Māori did not use bows and arrows. Photograph: AlamyThe Texas company says it is aiming to resurrect the extinct bird within five to 10 years, in partnership with the Ngāi Tahu Research Centre at New Zealand’s University of Canterbury.Reportedly backed by US$15m (£11m) of funding from the Lord of the Rings film-maker Sir Peter Jackson, who is an investor in Colossal Biosciences and an avid moa bone collector, the project will try to “de-extinct” the giant bird by harvesting DNA from fossils, then editing genes of its nearest surviving relatives, such as the emu. The genetically modified birds will be hatched out and released into enclosed “rewilding sites”, the company says.Peter Jackson (left), holding a moa’s bone, with Colossal’s founder, Ben Lamm. Photograph: Courtesy of Colossal Biosciences“The hope that within a few years, we’ll get to see a moa back again – that gives me more enjoyment and satisfaction that any film ever has,” says Jackson.As part of Colossal’s announcement, the Māori archaeologist Kyle Davis says: “Our earliest ancestors in this place lived alongside moa and our records, both archaeological and oral, contain knowledge about these birds and their environs. We relish the prospect of bringing that into dialogue with Colossal’s cutting-edge science as part of a bold vision for ecological restoration.”This is the latest in a string of headline-grabbing claims by Colossal, which raised $200m in January on a $10bn valuation of the company. In April, Colossal claimed it had resurrected the dire wolf, a North American predator which has been extinct for about 13,000 years, with the birth of two grey wolves that had been genetically modified to have dire wolf characteristics. Weeks earlier, the company released photos of “woolly mice”, which had been genetically altered to have woolly mammoth traits as part of efforts to “de-extinct” the giant herbivore by genetically modifying Asian elephants. The firm has also set its sights on bringing back the dodo, the Mauritian bird that was hunted to extinction by sailors in the 17th century.But Colossal’s announcements are attracting growing scorn and concern from many researchers, who argue that claims of “de-extinction” are false and a distraction from the ongoing rampant loss of biodiversity, with a million existing species at risk of disappearing. There are also concerns that these “resurrected” hybrid species are designed for habitats and ecological niches that may no longer exist. Research published in the journal Nature Ecology and Evolution concluded that spending the limited resources available for saving nature on de-extinction could lead to net biodiversity loss.Colossal’s ‘woolly mice’ have been genetically altered to have woolly mammoth traits. Photograph: undefined/APAroha Te Pareake Mead, a member of the International Union for Conservation of Nature Policy Development Working Group on the use of Synthetic Biology in Conservation, says: “De-extinction is a misnomer, a false promise, that is rooted more in ego than a genuine effort to conserve species. These are exercises in the egotistical delight in the theatrical production of ‘discovery’ devoid of ethical, environmental and cultural considerations. Bring the moa back? To where? To what quality of life? To roam freely?”Dr Tori Herridge, an evolutionary biologist at the University of Sheffield, who turned down an offer of joining Colossal Biosciences’ advisory board, says the company’s initiatives are best thought of as scientific experiments – rather than genuinely bringing back extinct species from thousands of years ago.“Is de-extinction possible? No, it is not possible. What you could potentially do – we’ll see – is create a genetically modified organism that may contain some appearance traits that are linked to a previously extinct species based on what we think they were like. Using the term “de-extinction” allows us to skip over the hard questions. This is not bringing back the mammoth or the moa or the dodo, this is creating something new to create a change in an ecosystem,” she says.Herridge questions the deterministic view of genetics – highlighting that learned culture is a crucial part of a wild species.“I don’t think you’re going to be able to create a something that is behaviourally a woolly mammoth just based on its genome. A lot of elephant behaviour is learned. We know there are problems with elephant behaviour once you remove a matriarch from a group,” she says.Colossal’s genetically modified ‘dire wolves’ Romulus and Remus at five months old. Photograph: Colossal Biosciences/AFP/Getty ImagesColossal Biosciences says its work is helping to slow the rampant ongoing loss of biodiversity by returning functions lost to ecosystems when animals such as mammoth, moa and dodo go extinct. They point to excitement about how its techniques could help restore genetic diversity in endangered wildlife, helping species such as the American red wolf to avoid an extinction doom loop. A representative for the company said they strongly reject claims that de-extinction is not possible.Sir Richard Owen, an English biologist, comparative anatomist and paleontologist, with a giant moa skeleton, c1879. Photograph: Alpha Historica/AlamyProf Andrew Pask, who is working on the moa project for Colossal, says the critics are wrong.“For many of our living species on the brink of extinction, the damage has been done. They are in an extinction vortex where the population spirals to extinction. The single, only way out of this is by bringing back lost diversity into those species genome. This is what de-extinction technology can do,” he says.“To say it is not possible is just not true. It is hard. It is complex. But we have all the tools to do it. If we re-engineer a genome that is 99.9% identical to a thylacine, a moa, a mammoth then that animal would be as similar to a moa and any two moas would be in that population.”But moa expert Nic Rawlence, an associate professor in ancient DNA at the University of Otago, says there is little chance of bringing the giant birds back from the dead.“This is Jurassic Park with very low chance of success,” he says.“If we think of the dire wolf, the genome is 2.5bn individual letters long. It’s 99% identical to the grey wolf, so that’s still significantly over a million differences, and they made only 20 changes to 14 genes. So, to say they’ve created a dire wolf is farcical. They’ve created a designer grey wolf. And that’ll be the same with whatever they do with the moa.”

Giant prehistoric kangaroos preferred to ‘chill at home’ and didn’t like to go out much, scientists say

Fossil teeth show species of protemnodon that roamed Australia between 5m and 40,000 years ago lived and died near Queensland cavesGet our afternoon election email, free app or daily news podcastDespite their immense size, species of prehistoric giant kangaroos from a site in Queensland were probably homebodies with a surprisingly small range compared to other kangaroos, according to new Australian research.Protemnodon, which roamed the Australian continent between 5m and 40,000 years ago and is now extinct, was significantly larger than its modern relatives. Some species weighed up to 170kg, making them more than twice as heavy as the largest red kangaroo. Continue reading...

Despite their immense size, species of prehistoric giant kangaroos from a site in Queensland were probably homebodies with a surprisingly small range compared to other kangaroos, according to new Australian research.Protemnodon, which roamed the Australian continent between 5m and 40,000 years ago and is now extinct, was significantly larger than its modern relatives. Some species weighed up to 170kg, making them more than twice as heavy as the largest red kangaroo.Given their size, researchers expected they might have an expansive territory, said University of Wollongong palaeo-ecologist Chris Laurikainen Gaete, the co-author of the study published in PLOS One.That’s because in most modern plant-eating mammals, including kangaroos and other macropods, larger body size correlated with geographic range, he said. A small marsupial such as the pademelon, for example, occupies an area smaller than a kilometre squared, whereas the red kangaroo – the largest of all kinds – in outback Australia can hop long distances, sometimes further than 20km.But analysis of fossil teeth found near Mt Etna, 30km north of Rockhampton in Queensland, revealed something quite different. These protemnodon kept to close quarters, living and dying near the caves where their remains were found.The Mt Etna fossil site in Queensland. Protemnodon’s restricted range increased its risk of extinction amid a changing climate, an expert says. Photograph: Scott HocknullCo-author Dr Scott Hocknull, a vertebrate palaeontologist and senior curator at the Queensland Museum, said the individuals from Mt Etna seemed to be “real homebodies” that stayed within “a tiny pocket” in and around the limestone caves.“These gigantic kangaroos were just chilling at home, eating the rainforest leaves, because there were heaps of them around. That also means that the environment was quite stable. It meant that over hundreds of thousands of years, these animals decided that staying put was a good bet.”The population at Mt Etna was “probably quite happy” for some time, Hocknull said. The rainforest probably provided a reliable source of food, while the caves offered protection from prehistoric predators, such as marsupial lions.But their restricted range was a “bad bet” in the end, Hocknull said, because it pre-disposed them to a risk of extinction when a changing climate and increasing aridity disrupted the rainforest environment about 280,000 years ago.Dr Scott Hocknull of the Queensland Museum with a protemnodon skull fossil. The prehistoric kangaroos were ‘real homebodies’, he saysDr Isaac Kerr, who specialises in kangaroo palaeontology at Flinders University and was not involved with the study, said protemnodon fossils – found mainly in the south and east of the country – indicated there were several species adapted to different environments.“Probably they were all over the whole continent, including New Guinea,” he said. A site in Tasmania had one of the latest surviving species, dated to 41,000 years ago.skip past newsletter promotionSign up to Afternoon Update: Election 2025Our Australian afternoon update breaks down the key election campaign stories of the day, telling you what’s happening and why it mattersPrivacy Notice: Newsletters may contain info about charities, online ads, and content funded by outside parties. For more information see our Privacy Policy. We use Google reCaptcha to protect our website and the Google Privacy Policy and Terms of Service apply.after newsletter promotionKerr said these megafauna kangaroos ranged in size but were generally stockier than their modern counterparts, with shorter feet.Protemnodon probably looked something like a wallaroo, he said, “squat and muscular but still quite large compared to a modern kangaroo”.Mt Etna is one of Australia’s richest fossil sites, containing evidence of ancient Pleistocene rainforests and records covering periods of past environmental change when rainforests gave way to open, arid environments.The researchers’ next step was to apply similar techniques to fossils of smaller kangaroos such as tree kangaroos, pademelons and rock wallabies from Mt Etna, which still have living descendants, to understand how they survived the environmental changes while protemnodon died out.Palaeo-ecologist Chris Laurikainen Gaete says that with most modern plant-eating mammals, larger body size correlates with larger geographic range – but not for the protemnodon found at Mt EtnaThe study compared the unique chemical signatures found in the local geology with those found in the fossilised teeth to establish the range of each animal, Gaete said.“Strontium is an element that varies in the environment, specifically in underlying bedrocks – so a limestone will have a significantly different strontium signature compared to something like volcanic rock or basalt,” he said. These unique signatures made their way into soil and plants, and were reflected in the fossilised teeth of herbivores that ate those plants.Laurikainen Gaete said the technique could be used to understand, on a site-by-site basis, why certain species of megafauna disappeared from particular places.Hocknull said: “It fundamentally shifts how palaeontologists and ecologists look at the fossil record.”

Sunscreen, Clothing and Caves May Have Given Modern Humans an Edge Over Neanderthals When Earth's Magnetic Field Wandered

A new study suggests the extinction of Neanderthals nearly coincided with a shift in Earth's magnetic field that let more radiation reach the ground. Our species might have adapted more easily

Sunscreen, Clothing and Caves May Have Given Modern Humans an Edge Over Neanderthals When Earth’s Magnetic Field Wandered A new study suggests the extinction of Neanderthals nearly coincided with a shift in Earth’s magnetic field that let more radiation reach the ground. Our species might have adapted more easily A reconstruction of a Neanderthal man in the Natural History Museum, Vienna. A new study suggests Neanderthals could not adapt to a period of increased radiation as well as early modern humans did. Jakub Hałun via Wikimedia Commons under CC BY-SA 4.0 One of the most enduring questions in anthropology is why Neanderthals, our closest extinct human relatives, completely disappeared around 40,000 years ago. Possible theories include climate change, resource competition and the dilution of Neanderthals’ genes through interbreeding with modern humans’ ancestors. Now, new research suggests early Homo sapiens may have had an edge on their cousins thanks to their use of sun protection—namely, natural sunscreen, tailored clothes and caves—during a period of unusually strong solar and cosmic radiation. The research is detailed in a study published last week in the journal Science Advances. Earth’s moving interior generates our planet’s magnetic field, an invisible shield that helps protect us and our atmosphere from harmful energy coming from space. This magnetic field has a north and south orientation, which currently roughly aligns with Earth’s North and South poles. Those are the sites where the field is the strongest, which is why auroras are usually visible at more extreme latitudes. Sometimes, however, the magnetic field’s poles wander from the planet’s geographic poles in what scientists call geomagnetic excursions, according to a statement. Occasionally, the magnetic field’s north and south poles swap completely—a natural phenomenon that has taken place about 180 times in Earth’s history. The most recent geomagnetic excursion, called the Laschamps excursion, occurred around 41,000 years ago—just before Neanderthals went extinct. To investigate this event for the new study, an international team of researchers reconstructed Earth’s upper atmosphere and nearby space during the Laschamps excursion using a 3D computer model. By combining this with models of the space plasma around Earth and our planet’s auroras, the team suggests that during the Laschamps excursion, Earth’s magnetic field overall was only 10 percent as strong as its current level. This allowed the north magnetic pole to wander over Europe, making aurora visible across the continent. It also let more cosmic radiation reach the ground. A diagram of the Laschamps excursion. At this time, auroras—depicted here by gradients of green and yellow—could be seen from most of the globe. Agnit Mukhopadhyay, University of Michigan “During the Laschamps event, the magnetic poles shifted away from true north,” lead author Agnit Mukhopadhyay, a climate and space scientist at the University of Michigan, tells BBC Science Focus’ Hatty Willmoth. “This movement, coupled with a notable weakening of the magnetic field, resulted in an expanded auroral zone and increased atmospheric penetration by energetic particles, such as solar energetic particles and cosmic radiation.” Both of those particles represent ionizing radiation, which can be harmful to human health. Interestingly, the Laschamps excursion coincided with notable developments for our ancestors and early relatives. According to the statement, some evidence suggests Homo sapiens started producing custom clothing, spending more time in caves and increasing their use of a mineral called ochre at that time. “There have been some experimental tests that show it [ochre] has sunscreen-like properties. It’s a pretty effective sunscreen, and there are also ethnographic populations that have used it primarily for that purpose,” Raven Garvey, a co-author of the study and an anthropologist at the University of Michigan, says in the statement. “So, while archaeologists cannot directly observe the behaviors of peoples who lived over 40,000 years ago, we can hypothesize that the increased use of ochre may have been, in part, for its sun-protective properties,” Garvey adds to BBC Science Focus. Environmental changes caused by the weaker magnetic field “may have driven adaptive behaviors in human populations, such as the increased use of protective clothing and ochre for UV shielding,” as Mukhopadhyay tells New Scientist’s James Woodford. But as early modern humans made these lifestyle changes, Neanderthals ultimately disappeared. The team speculates these differences may have contributed to Homo sapiens outliving Neanderthals, who don’t seem to be associated with the same developments. Not everyone agrees, however. “There’s definitely a rough overlap in terms of timing between the incursion of ancient modern humans into Europe and the Laschamps event,” says Amy Mosig Way, an archaeologist from the Australian Museum who was not involved in the study, to New Scientist. “But it’s probably a stretch to say modern humans had better sun protection in the form of tailored clothing than Neanderthals, and that this contributed to their ability to travel farther than Neanderthals and their subsequent dominance of Eurasia.” More broadly, the researchers suggest that our ancestors’ survival of a severely weakened magnetic sphere could hold implications for how we continue our search for extraterrestrial beings. “Many people say that a planet cannot sustain life without a strong magnetic field,” Mukhopadhyay says in the statement. “Looking at prehistoric Earth, and especially at events like this, helps us study exoplanetary physics from a very different vantage point. Life did exist back then. But it was a little bit different than it is today.” Get the latest stories in your inbox every weekday.

Environmentalists sue Trump administration to save ‘unique amphibian’ at Crater Lake

Warming waters, an invasive fish and federal budget cuts are threatening the cute little creature.

A “cute little newt” has found itself in the middle of a fight between a leading environmental organization and the Trump administration.The Center for Biological Diversity on Thursday announced its intention to file a lawsuit over the U.S. Fish and Wildlife Service’s failure to protect the Crater Lake newt, also known as the Mazama newt, which the environmental organization said is “critically imperiled.”In October, the U.S. Fish and Wildlife Service announced it was considering listing the newt as a threatened or endangered species, following a petition by the Center for Biological Diversity. The federal agency said the listing would be fully considered in a 12-month evaluation, but since then the agency has faced a series of firings and budget cuts as part of the Trump administration’s sweeping cuts to the federal government. Those cuts will make it harder to protect the newt, which is currently threatened by invasive crayfish that prey on the little amphibian, the Center for Biological Diversity said.“Crater Lake newts are unique little amphibians on the brink of extinction and urgent action is needed for them to have any chance of survival,” Chelsea Stewart-Fusek, an endangered species attorney with the organization, said in a news release. “We’re at the point where newts may need to be bred in captivity until the explosion of crayfish can be addressed. The longer the government waits, the harder it’ll be for these irreplaceable amphibians to recover.”If listed as an endangered species, the newt may benefit from federal funds that could help with crayfish removal and a captive breeding program, Stewart-Frisk said. The demise of the Crater Lake newt, which is a subspecies of the rough-skinned newt, has accelerated in the last 15 years as warming temperatures favor its predator, the signal crayfish, which was introduced to the park in the late 1800s as a way to attract visitors and gain federal protection as a national park – a plan that ultimately worked. Crayfish now occupy more than 95% of the lake’s shoreline, according to the Center for Biological Diversity, and scientists project they could occupy 100% in less than two years. That could threaten not only the newts, but the crystal blue clarity of Crater Lake itself, as the crayfish also prey on native plankton-consuming invertebrates, increasing the growth of algae in the lake, the organization said. “Amphibians act as canaries in the coal mine, and right now more than 40% of the world’s amphibians are at risk of extinction,” Stewart-Fusek said. “This is a grave warning that should be taken seriously. What harms wildlife and their habitat endangers us, too.”--Jamie Hale covers travel and the outdoors and co-hosts the Peak Northwest podcast. Reach him at 503-294-4077, jhale@oregonian.com or @HaleJamesB.Our journalism needs your support. Subscribe today to OregonLive.com.

Scientists say they 'de-extincted' dire wolves. Experts at La Brea Tar Pits are skeptical

Colossal Biosciences, the company that made headlines years back for claims they wanted to revive the woolly mammoth, say they successfully "de-extincted" the dire wolf. Local experts are not so sure.

When news that scientists in Texas had succesfully reintroduced the long-extinct dire wolf to the modern world, more people than just “Game of Thrones” fans took notice.Researchers at the Natural History Museum’s La Brea Tar Pits, where a wall is decorated with hundreds of dire wolf skulls, had questions.Namely, are they really dire wolves? Turns out, it depends on how you define it.“What they have created is basically a genetically engineered gray wolf that has been given genetic traits so they can express morphological or physical traits that more resemble dire wolves,” said Kayce Bell, a terrestrial mammal curator at the Natural History Museum. “The technology and the tools that they are developing with this work are incredible and very powerful, but the terms that are being used to discuss it, I think, are misleading.”Earlier this week, biotechnology company Colossal Biosciences in Dallas announced they had “de-extincted” the dire wolf, sharing the news of the births of three healthy pups. Over 18 months, experts there extracted and sequenced ancient DNA from two dire wolf fossils — a 13,000-year-old tooth from Sheridan Pit, Ohio, and a 72,000-year-old inner ear bone from American Falls, Idaho. With that ancient DNA, scientists identified gene variants specific to dire wolves and then performed multiplex gene editing with a genome from the gray wolf, dire wolves’ closest living relatives. They used domestic dogs as surrogate mothers to birth the three pups. This undated photo provided by Colossal Biosciences shows two pups that were genetically engineered with similarities to the extinct dire wolf. (Colossal Biosciences via Associated Press) Colossal’s chief science officer, Beth Shapiro, said she understands the scientific skepticism that came with the announcement. “I get it,” she said. “It’s frustrating when you work in paleontology and you feel like it’s not effective science communication, and I wish I’d done a bit better.”Though Southern California has a jackpot of dire wolf fossils relative to other sites, extracting DNA from the local samples is difficult. Shapiro said she’s been trying and unable to collect DNA from local samples for 20 years. Among the reasons it’s challenging to collect, experts say, is that L.A.’s urban landscape bakes in the sun, heating up the asphalt, which could degrade ancient DNA buried underneath.La Brea Tar Pits has the highest concentration of dire wolf fossils in the world, with remains from over 4,000 dire wolves found at the site. They lived in the region for at least 50,000 years, disappearing about 13,000 years ago.“There’s no other site on Earth that even comes close to that,” said Emily Lindsey, the associate curator and excavation site director at La Brea Tar Pits.Dire wolves, native to Southern California but not limited to the region, were highly adaptable and had a very wide range of environmental tolerances before the species went extinct about 10,000 years ago, Lindsey said. The three pups — Romulus and Remus, who were born in October, and Khaleesi, born in January — now live on an ecological preserve at an undisclosed location that spans over 2,000 acres and hosts 10 full-time staff members who care for and observe them. The preserve is certified by the American Humane Society and registered with the U.S. Department of Agriculture.Depending on how you look at it, that could be dire wolf territory now.In 2016, the International Union for Conservation of Nature published a report that focused on de-extinction and defined it as “bringing back a proxy of an extinct species that resembles it in some way, phenotypically, physiologically, ecologically,” Shapiro said.But in the end, she said she’s not really hung up on what the animals are called beyond their names, inspired by founders of Rome and the “Game of Thrones” show.“Call it a de-extinct dire wolf that abides by the definition that the scientific community agreed on 10 years ago. Call it Colossal’s dire wolf. Call it a gray wolf with 20 edits that looks and acts like a dire wolf and is a functional replacement for a dire wolf,” Shapiro said.Part of Colossal’s announcement this week included news that they had also successfully created four clones of the endangered red wolf using a new noninvasive cloning technology. Both Lindsey and Bell said they appreciated Colossal’s work on conserving endangered species, but think that focusing on conservation is a more productive use of resources. “There are potentially useful applications of some of these technologies, particularly for preventing highly endangered species from going extinct. I think that would be a far more efficient application of these technologies than trying to bring something resembling an extinct species back to life,” Lindsey said. “I’d hate to have to be trying to de-extinct wolves once they go extinct, right?”Colossal’s Chief Executive Ben Lamm said the company wants to pair their “de-extinction events” with work they’re doing to protect critically endangered species. The company’s other de-extinction hopes include reviving the woolly mammoth, the dodo, and the thylacine, or Tasmanian tiger. To Lamm and Shapiro, de-extinction and conservation can work in tandem.“Conservation and de-extinction are not at odds with each other. The de-extinction toolkit should be part of the increasing number of ways that we have at our fingertips to be able to help endangered species survive,” Shapiro said.Lamm, who held up drawings of dodos and other extinct animals children had sent to the Colossal team during a Zoom interview with The Times, said he thinks the milestone could also inspire more people to pursue careers in related fields.“The world needs a little hope right now, and I think the world needs more science. Hopefully, we’re providing a little bit of both,” he said.And yes, of course “Jurassic Park” quotes and references are tossed Lamm and Shapiro’s way with stunning frequency.“People actually say to us, ‘Don’t you know what happened in Jurassic Park?,’ equating it to, like, Chernobyl,” Lamm said. “ ‘Didn’t you see what happened there?’ Not, ‘Didn’t you watch the movie and learn anything about human hubris from the movie?’ They don’t say that.”Shapiro added: “People are yelling at us that these aren’t real dire wolves. But no one has ever questioned whether the dinosaurs in ‘Jurassic Park’ are real dinosaurs.”While the debate is still open, Lindsey said she invites anyone curious about the creatures to visit La Brea Tar Pits to see some of the “real dire wolves” that they have excavated at the site. “It’s a really cool opportunity — one that you don’t get in almost any other city in the world — to come and really see the incredible diversity of large animals that lived here until very recently,” Lindsey said.

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