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The Ideal Shower Is This Many Minutes Long, According To Experts

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Tuesday, November 4, 2025

The more stressed some of us get, the more we can find ourselves wanting to double (or triple) down on our self-care routines. Case in point: the “everything shower.” It all started on TikTok, and now the platform is exploding with people demonstrating hours-long shower sessions that include exfoliation, shaving, hair masks, body scrubs, face masks, oils, serums and more. The appeal, in large part, lies with the fact that it’s a way to take control of one small part of your life, when so much else seems out of control.It’s a little bit washing up, a little bit spa treatment and a whole lot performative wellness ritual — and even more water. Many everything shower proponents describe it as a reset after a hard week and a way to “start over” with a scrupulously groomed body, head to toe. They sing the praises of time spent focused just on themselves, tending to each square inch of flesh and treating themselves with kindness and devotion.But is it a little too much? Should our skin be under running water for such a long period of time? And what about a long shower’s impact on our increasingly drought-ridden planet? Here’s what science-based experts, not TikTok influencers, have to say about the everything shower trend. Cleansing our skin is important, but stripping it can be detrimental.You need to keep your skin clean for all sorts of reasons, said dermatologist Dr. Nada Elbuluk, a professor of clinical dermatology at the University of Southern California. “Cleansing is important for removing dirt, dead skin cells and other contaminants that we may come into contact with throughout the day, such as bacteria, viruses and fungi,” she added. FG Trade via Getty ImagesKeep it to five minutes, sir.You should make sure you’re keeping “hot spots” clean, said dermatologist Dr. Mojgan Hosseinipour: “There are a few areas you should always wash daily, including armpits, groin, feet and face, because those accumulate sweat, bacteria and oil more quickly.” Hosseinipour also recommended showering after every workout, and possibly more frequently if you live in a hot and humid climate or are prone to sweating and body acne.But overdoing it is a strong “no” from these doctors. “Overwashing the skin may strip natural oils and lead to excessive dryness,” Elbuluk said. “Avoid hot water, too, because the hotter water is, and the longer the exposure to it, the more it ultimately dries out the skin.”“My motto is: keep it simple,” Hosseinipour said. “Occasionally adding a few extra steps to create a spa-like self-care experience can be enjoyable, but regularly taking an everything shower isn’t necessary. My main concern lies with exfoliation, because excessive scrubbing or over-exfoliating can cause redness, dryness and itching, and it can even damage the skin barrier. A gentle, consistent routine is far more beneficial for long-term skin health.”In summary, an everything shower might make you feel like a brand-new person, but it can also leave your skin barrier feeling prematurely old and excessively dehydrated, which is pretty much the exact opposite of what you were hoping to accomplish. The environmental impact is significant.With droughts and water shortages increasing globally, long showers also raise real sustainability concerns. Reducing the length of your shower doesn’t just protect your skin, but also results in fewer gallons being drawn from overstressed reservoirs and less energy being used to heat and pump that water. Significant water shortages are already an issue for some parts of the world, and many of us can anticipate that the situation will have a negative impact on our lives in the near future. The United Nations projects that within just five years, global demand for freshwater will exceed supply by 40%. The need for water is increasing, thanks to the emergence of “megadroughts” that have recently affected the West Coast, southern Europe, and sub-Saharan Africa. Reducing the time you spend in the shower may seem like a small act, but enough of us taking action together can reduce community demand on fragile freshwater systems and the energy required to treat, heat and move that water to our homes. In the United States, for example, the average shower lasts for 7.8 minutes and uses approximately 15.8 gallons of water, according to the nonprofit organization Alliance for Water Efficiency. The organization states that the duration of the shower has a direct impact on water usage. If you’re doing a full-blown 30- to 45-minute “everything shower,” you could be burning through 75 to 110 gallons of water. Every time. That’s basically the equivalent of running three loads of laundry for just one shower.Many of us act as though water appears like magic when we turn on a faucet, but the city you live in has to pump, treat and distribute every gallon, which is an energy-intensive process. The EPA estimates that water and wastewater treatment often consumes 30 to 40% of a city’s total energy consumption. Wasting water doesn’t just affect your own household’s water and heating bill — it also puts a strain on your area’s systems and reserves. Shorter showers save you money.Acting to help the planet can also have a positive impact on your monthly energy and water bills, too. According to the EPA, the average American family of four uses approximately 400 gallons of water per day, so any way to reduce that amount can make a significant difference. Cutting your shower time from a typical 10-minute one to five minutes saves roughly 10 to 12 gallons each time.Besides saving on water, shorter showers save on the energy needed to heat the water you’re using, so less time spent under warm or hot water is a savings of fuel, as well. Research has shown that reducing shower durations from six to 10 minutes to four minutes can lead to energy savings ranging from 0.1 to 3.8 kilowatt-hours (kWh) per person per day. These shorter showers represented a combined water and energy cost savings of between $37 and $500 per household per year.So, how long should a shower be? “In general, dermatologists recommend no more than 5 to 10 minutes of warm water exposure per day for showers,” Elbuluk said. If you have atopic dermatitis and/or very dry skin, you may want to stay closer to, or under, the 5-minute point.From an environmental standpoint, taking shorter showers, around five minutes, is considered an effective way to conserve water. Can you stick to a five-minute shower routine? If you prep everything before turning on the water, including getting out shampoo and locating your washcloth or scrubber, it’s more than possible. If you have to wait for hot water to reach the shower before you can step in, you can save even more water by collecting that initial “run off” of cold water in a bucket for watering plants. If you need to do more than a quick shampoo, conditioner and body wash, turn the water off while you shave or deep condition.YourSupportMakes The StoryYour SupportFuelsOur MissionYour SupportFuelsOur MissionJoin Those Who Make It PossibleHuffPost stands apart because we report for the people, not the powerful. Our journalism is fearless, inclusive, and unfiltered. Join the membership program and help strengthen news that puts people first.We remain committed to providing you with the unflinching, fact-based journalism everyone deserves.Thank you again for your support along the way. We’re truly grateful for readers like you! Your initial support helped get us here and bolstered our newsroom, which kept us strong during uncertain times. Now as we continue, we need your help more than ever. We hope you will join us once again.We remain committed to providing you with the unflinching, fact-based journalism everyone deserves.Thank you again for your support along the way. We’re truly grateful for readers like you! Your initial support helped get us here and bolstered our newsroom, which kept us strong during uncertain times. Now as we continue, we need your help more than ever. We hope you will join us once again.Support HuffPostAlready a member? Log in to hide these messages.Some environmentally conscious folks set a five-minute timer as soon as they turn on the faucet, or sing a few choruses of their favorite song, timed in advance. One British energy company has even issued a “Short Shower Playlist” of tunes that run no longer than five minutes. With a little focus and some preplanning, you may be able to turn an “out in five” shower into a win-win for your skin, your household expenses and the planet.

Here’s what your skin, the planet and your wallet wish you knew.

The more stressed some of us get, the more we can find ourselves wanting to double (or triple) down on our self-care routines. Case in point: the “everything shower.” It all started on TikTok, and now the platform is exploding with people demonstrating hours-long shower sessions that include exfoliation, shaving, hair masks, body scrubs, face masks, oils, serums and more. The appeal, in large part, lies with the fact that it’s a way to take control of one small part of your life, when so much else seems out of control.

It’s a little bit washing up, a little bit spa treatment and a whole lot performative wellness ritual — and even more water. Many everything shower proponents describe it as a reset after a hard week and a way to “start over” with a scrupulously groomed body, head to toe. They sing the praises of time spent focused just on themselves, tending to each square inch of flesh and treating themselves with kindness and devotion.

But is it a little too much? Should our skin be under running water for such a long period of time? And what about a long shower’s impact on our increasingly drought-ridden planet? Here’s what science-based experts, not TikTok influencers, have to say about the everything shower trend.

Cleansing our skin is important, but stripping it can be detrimental.

You need to keep your skin clean for all sorts of reasons, said dermatologist Dr. Nada Elbuluk, a professor of clinical dermatology at the University of Southern California. “Cleansing is important for removing dirt, dead skin cells and other contaminants that we may come into contact with throughout the day, such as bacteria, viruses and fungi,” she added.

FG Trade via Getty Images

Keep it to five minutes, sir.

You should make sure you’re keeping “hot spots” clean, said dermatologist Dr. Mojgan Hosseinipour: “There are a few areas you should always wash daily, including armpits, groin, feet and face, because those accumulate sweat, bacteria and oil more quickly.” Hosseinipour also recommended showering after every workout, and possibly more frequently if you live in a hot and humid climate or are prone to sweating and body acne.

But overdoing it is a strong “no” from these doctors. “Overwashing the skin may strip natural oils and lead to excessive dryness,” Elbuluk said. “Avoid hot water, too, because the hotter water is, and the longer the exposure to it, the more it ultimately dries out the skin.”

“My motto is: keep it simple,” Hosseinipour said. “Occasionally adding a few extra steps to create a spa-like self-care experience can be enjoyable, but regularly taking an everything shower isn’t necessary. My main concern lies with exfoliation, because excessive scrubbing or over-exfoliating can cause redness, dryness and itching, and it can even damage the skin barrier. A gentle, consistent routine is far more beneficial for long-term skin health.”

In summary, an everything shower might make you feel like a brand-new person, but it can also leave your skin barrier feeling prematurely old and excessively dehydrated, which is pretty much the exact opposite of what you were hoping to accomplish.

The environmental impact is significant.

With droughts and water shortages increasing globally, long showers also raise real sustainability concerns. Reducing the length of your shower doesn’t just protect your skin, but also results in fewer gallons being drawn from overstressed reservoirs and less energy being used to heat and pump that water. Significant water shortages are already an issue for some parts of the world, and many of us can anticipate that the situation will have a negative impact on our lives in the near future. The United Nations projects that within just five years, global demand for freshwater will exceed supply by 40%. The need for water is increasing, thanks to the emergence of “megadroughts” that have recently affected the West Coast, southern Europe, and sub-Saharan Africa.

Reducing the time you spend in the shower may seem like a small act, but enough of us taking action together can reduce community demand on fragile freshwater systems and the energy required to treat, heat and move that water to our homes. In the United States, for example, the average shower lasts for 7.8 minutes and uses approximately 15.8 gallons of water, according to the nonprofit organization Alliance for Water Efficiency.

The organization states that the duration of the shower has a direct impact on water usage. If you’re doing a full-blown 30- to 45-minute “everything shower,” you could be burning through 75 to 110 gallons of water. Every time. That’s basically the equivalent of running three loads of laundry for just one shower.

Many of us act as though water appears like magic when we turn on a faucet, but the city you live in has to pump, treat and distribute every gallon, which is an energy-intensive process. The EPA estimates that water and wastewater treatment often consumes 30 to 40% of a city’s total energy consumption. Wasting water doesn’t just affect your own household’s water and heating bill — it also puts a strain on your area’s systems and reserves.

Shorter showers save you money.

Acting to help the planet can also have a positive impact on your monthly energy and water bills, too. According to the EPA, the average American family of four uses approximately 400 gallons of water per day, so any way to reduce that amount can make a significant difference. Cutting your shower time from a typical 10-minute one to five minutes saves roughly 10 to 12 gallons each time.

Besides saving on water, shorter showers save on the energy needed to heat the water you’re using, so less time spent under warm or hot water is a savings of fuel, as well. Research has shown that reducing shower durations from six to 10 minutes to four minutes can lead to energy savings ranging from 0.1 to 3.8 kilowatt-hours (kWh) per person per day. These shorter showers represented a combined water and energy cost savings of between $37 and $500 per household per year.

So, how long should a shower be?

“In general, dermatologists recommend no more than 5 to 10 minutes of warm water exposure per day for showers,” Elbuluk said. If you have atopic dermatitis and/or very dry skin, you may want to stay closer to, or under, the 5-minute point.

From an environmental standpoint, taking shorter showers, around five minutes, is considered an effective way to conserve water. Can you stick to a five-minute shower routine? If you prep everything before turning on the water, including getting out shampoo and locating your washcloth or scrubber, it’s more than possible. If you have to wait for hot water to reach the shower before you can step in, you can save even more water by collecting that initial “run off” of cold water in a bucket for watering plants. If you need to do more than a quick shampoo, conditioner and body wash, turn the water off while you shave or deep condition.

YourSupportMakes The Story

Your SupportFuelsOur Mission

Your SupportFuelsOur Mission

Join Those Who Make It Possible

HuffPost stands apart because we report for the people, not the powerful. Our journalism is fearless, inclusive, and unfiltered. Join the membership program and help strengthen news that puts people first.

We remain committed to providing you with the unflinching, fact-based journalism everyone deserves.

Thank you again for your support along the way. We’re truly grateful for readers like you! Your initial support helped get us here and bolstered our newsroom, which kept us strong during uncertain times. Now as we continue, we need your help more than ever. We hope you will join us once again.

We remain committed to providing you with the unflinching, fact-based journalism everyone deserves.

Thank you again for your support along the way. We’re truly grateful for readers like you! Your initial support helped get us here and bolstered our newsroom, which kept us strong during uncertain times. Now as we continue, we need your help more than ever. We hope you will join us once again.

Support HuffPost

Already a member? Log in to hide these messages.

Some environmentally conscious folks set a five-minute timer as soon as they turn on the faucet, or sing a few choruses of their favorite song, timed in advance. One British energy company has even issued a “Short Shower Playlist” of tunes that run no longer than five minutes. With a little focus and some preplanning, you may be able to turn an “out in five” shower into a win-win for your skin, your household expenses and the planet.

Read the full story here.
Photos courtesy of

UN Climate Conference Host Brazil Urges Nations to Negotiate and Find Solutions to Global Warming

Host country Brazil’s tactful guidance as host of the U.N. climate conference is raising hopes for ambitious action on fighting global warming as speeches continue from the high-level ministers in town

With a direct letter sent to nations, host country Brazil is shifting the U.N. climate conference into a higher gear. The letter sent late Monday comes during the final week of what has been billed as a historic climate summit, the first ever in the Amazon rainforest, a key regulator of climate because trees absorb carbon dioxide, a greenhouse gas that warms the planet. The letter comes ahead of speeches of high-level ministers Tuesday. Headliners include representatives from influential European countries like Ed Miliband, energy secretary of the United Kingdom, and Deputy Prime Minister Sophie Hermans of the Netherlands. More leaders will also speak from small island states and developing countries like Barbados and Bangladesh, both facing loss of land as seas rise because of climate change. The letter asks leaders to hash out many aspects of a potential agreement by Tuesday night so that much is out of the way before the final set decisions Friday, when the conference is scheduled to end. Climate summits routinely go past their last day, as all nations come to the negotiating table trying to balance domestic concerns with major shifts needed around the world to protect the environment and cut greenhouse gas emissions. Brazil’s guidance for the summit, called COP30, is raising hopes for significant measures to fight global warming, which could range from a road map to move away from fossil fuels like oil and coal, or more money to help nations build out clean energies like wind and solar. For negotiators, Brazil's letter will mean later nights as they seek to strike political bargains across a host of contentious issues.“There are important concessions we expect from all sides,” said André Corrêa do Lago, COP30 president. "It is said you have to give to receive.”That Wednesday timeline is “pretty ambitious" and the stakes are high, said Alden Meyer, a senior associate at climate think tank E3G.“Whether it’s dealing with the impacts of climate change, dealing with increased energy bills and energy insecurity, improving health, creating jobs. Those are the things that people care about. They don’t care about some sub-paragraph in a legal decision adopted here in Belem,” Meyer said. “Brazil, the presidency, has made that very clear since the beginning, that that’s going to be the litmus test.”He added that the optimistic spirit of the host country “is starting to get a little infectious” and that that is part of building trust and goodwill amongst nations.“I sense ambition here. I sense a determination,” former German climate envoy Jennifer Morgan said Monday morning. The Associated Press’ climate and environmental coverage receives financial support from multiple private foundations. AP is solely responsible for all content. Find AP’s standards for working with philanthropies, a list of supporters and funded coverage areas at AP.org.This story was produced as part of the 2025 Climate Change Media Partnership, a journalism fellowship organized by Internews’ Earth Journalism Network and the Stanley Center for Peace and Security.Copyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See – Oct. 2025

Pope Leo XIV Calls for Urgent Climate Action and Says God’s Creation Is 'Crying Out'

Pope Leo XIV is urging countries at United Nations climate talks to take “concrete actions” to stop climate change that is threatening the planet

BELEM, Brazil (AP) — Pope Leo XIV on Monday urged countries at United Nations climate talks to take “concrete actions” to stop climate change that is threatening the planet, telling them humans are failing in their response to global warming and that God’s creation “is crying out in floods, droughts, storms and relentless heat.”In a video message played for religious leaders gathered in Belem, Leo said nations had made progress, “but not enough.”“One in three people live in great vulnerability because of these climate changes,” Leo said. “To them, climate change is not a distant threat, and to ignore these people is to deny our shared humanity.”His message came as the talks were moving into their second week, with high-level ministers from governments around the world arriving at the edge of the Brazilian Amazon to join negotiations. Monday was dominated by speeches, with several leaders from Global South nations giving emotional testimony on devastating costs of recent extreme weather and natural disasters.Vulnerable nations have pressed for more ambition at these talks as world leaders have begun to acknowledge that Earth will almost surely go past a hoped-for limit — 1.5 degrees Celsius (2.7 degrees Fahrenheit) in Earth's warming since pre-industrial times. That was the target set at these talks in 2015 in the landmark Paris agreement.Scientists say in addition to deadly heat, a warming atmosphere leads to more frequent and deadly extreme weather such as flooding, droughts, violent downpours and more powerful hurricanes.Leo said there's still time to stay within the Paris Agreement, but not much.“As stewards of God’s creation, we are called to act swiftly, with faith and prophecy, to protect the gift He entrusted to us,” he said. And he added: “But we must be honest: it is not the Agreement that is failing, we are failing in our response. What is failing is the political will of some.”U.N. climate chief Simon Stiell said Leo's words “challenge us to keep choosing hope and action."Leo "reminds us that the Paris Agreement is delivering progress and remains our strongest tool — but we must work together for more, and that bolder climate action is an investment in stronger and fairer economies, and more stable world," Stiell said.David Gibson, director of the Center on Religion and Culture at Fordham University in New York, said Leo is becoming the world’s most prominent moral leader against climate change.“This message does stake Leo out as a voice for the rest of the world, especially the Southern Hemisphere where climate change is wreaking havoc with the vulnerable in Asia, Africa and Latin America,” said Gibson.And he said it shows that Leo, who spent decades working as a missionary in Peru and is a naturalized Peruvian citizen, “has a Latin American heart and voice.”The Laudato Si' Movement, a Catholic climate movement that takes its name from a 2015 encyclical in which Pope Francis called for climate action, called Leo's message “a profound moral intervention.""He reminds the world that creation is crying out and that vulnerable communities cannot be pushed aside. “His voice cuts through the noise of negotiations and calls leaders back to what truly matters: our shared humanity and the urgent duty to act with courage, compassion, and justice,” the group's executive director, Lorna Gold, said.The Associated Press’ climate and environmental coverage receives financial support from multiple private foundations. AP is solely responsible for all content. Find AP’s standards for working with philanthropies, a list of supporters and funded coverage areas at AP.org.This story was produced as part of the 2025 Climate Change Media Partnership, a journalism fellowship organized by Internews’ Earth Journalism Network and the Stanley Center for Peace and Security.Copyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See – Oct. 2025

AI is guzzling energy for slop content – could it be reimagined to help the climate?

Some experts think AI could be used to lower, rather than raise, planet-heating emissions – others aren’t so convinced Cop30: click here for full Guardian coverage of the climate talks in BrazilArtificial intelligence is often associated with ludicrous amounts of electricity, and therefore planet-heating emissions, expended to create nonsensical or misleading slop that is of meagre value to humanity.Some AI advocates at a major UN climate summit are posing an alternative view, though – what if AI could help us solve, rather than worsen, the climate crisis? Continue reading...

Artificial intelligence is often associated with ludicrous amounts of electricity, and therefore planet-heating emissions, expended to create nonsensical or misleading slop that is of meagre value to humanity.Some AI advocates at a major UN climate summit are posing an alternative view, though – what if AI could help us solve, rather than worsen, the climate crisis?The “AI for good” argument has been made repeatedly at the Cop30 talks in Belém, Brazil, with supporters arguing AI can be used to lower, rather than raise, emissions through a series of efficiencies that can spread through areas of our lives such as food, transport and energy that cause much of the pollution dangerously heating our planet.Last week, a coalition of groups, UN bodies and the Brazilian government unveiled the AI Climate Institute, a new global initiative aimed at fostering AI “as a tool of empowerment” in developing countries to help them tackle environmental problems.Proponents say the program, in time, will help educate countries on how to use AI in an array of ways to bring down emissions, such as better optimizing public transit, organizing agricultural systems and recalibrating the energy grid so that renewables are deployed at the right times.Even weather forecasting, including the mapping of impending climate-driven disasters such as flooding and wildfires, can be improved in this way, according to Maria João Sousa, executive director, Climate Change AI, one of the groups behind the new initiative.“Very few places in the world actually run numerical weather prediction models because numerical weather prediction models are very compute-intensive,” she said. “I definitely believe (AI) is a positive force to accelerate a lot of these things.”AI can help monitor emissions, biodiversity and generally see what is going on, said Lorenzo Saa, chief sustainability officer at Clarity AI, who is also attending Cop30.“You can really start looking at where the problem is,” he said. “Then you can predict, and the prediction is actually short-term and long-term. You can now predict floods in the next week, but you can actually figure out sea level rise and things like that.”Saa admitted there are legitimate concerns about the governance of AI and its impact upon society but, on balance, the effect on the environment could be positive. In June, a report by the London School of Economics had an unexpectedly sunny estimate – AI could reduce global greenhouse gases by 3.2bn to 5.4bn tonnes in the next decade, even factoring in its vast energy consumption.“People already make dumb decisions about energy, such as running air conditioning for too long,” Saa said. “How much of our phone has bad stuff for us? I think a lot. How many hours do we spend on Instagram?“My view of this is that society is going to go in this direction. We need to think about how we are not destroying the planet with heating and we’re actually trying to make sure that there’s a net benefit.”Some other experts and environmental advocates are not convinced. The huge computational power of AI, particularly generative AI, is fueling a boom in data centers in countries such as the US that is gobbling up a huge amount of electricity and water, even in places prone to droughts, pushing up electricity bills in some places as a result.The climate cost of this AI gold rush, driven by companies such as Google, Meta and OpenAI, is large and set to get larger – a recent Cornell University study found that by 2030, the current rate of AI growth in the US will add up to 44m tons of carbon dioxide to the atmosphere, the equivalent of adding 10m gasoline cars to the road or the entire annual emissions of Norway.“People have this techno-utopian view of AI that it will save us from the climate crisis,” said Jean Su, a climate campaigner at the Center for Biological Diversity. “We know what will save us from the climate crisis – phasing out fossil fuels. It’s not AI.”Also, while AI can be used to drive efficiencies to lower emissions, the same sort of tools can be used to optimize other areas – including fossil fuel production. A report last month by Wood Mackenzie estimated that AI could help unlock an extra trillion barrels of oil – a scenario which, if the energy markets were to be amenable to such a thing, would obliterate any hopes of restraining catastrophic climate breakdown.Natascha Hospedales, lead lawyer for AI at Client Earth, said there is some merit to the “AI for good” argument, but that it is a “really small niche” within a much larger industry that is much more focused on maximizing profits.“There is some truth that AI could help the developing world, but much of this is in the early stage and some of it is hypothetical – it’s just not there yet,” she said. “Overall we are very, very far from a situation where AI for good balances out the negative environmental impact of AI.“The environmental cost of AI is already alarming and I don’t see data center growth winding down any time soon. A small percentage of AI is used for good and 99% of it is companies like Google and Meta lining their pockets with money, damaging the environment and human rights as they do it.”

‘Damned if we do but completely stuffed if we don’t’: heatwaves will worsen longer net zero is delayed

A new study suggests heatwaves will not revert back towards preindustrial conditions for at least 1,000 years after emissions target reachedSign up for climate and environment editor Adam Morton’s free Clear Air newsletter hereHeatwaves will become hotter, longer and more frequent the later net zero emissions is reached globally, new research suggests.Scientists at the ARC Centre of Excellence for 21st Century Weather and Australia’s national science agency, the CSIRO, simulated how heatwaves would respond over the next 1,000 years, examining the differences for each five-year delay in reaching net zero between 2030 and 2060. Continue reading...

Heatwaves will become hotter, longer and more frequent the later net zero emissions is reached globally, new research suggests.Scientists at the ARC Centre of Excellence for 21st Century Weather and Australia’s national science agency, the CSIRO, simulated how heatwaves would respond over the next 1,000 years, examining the differences for each five-year delay in reaching net zero between 2030 and 2060.The research, published in the journal Environmental Research Climate, found that for countries near the equator, delaying net zero until 2050 would result in heatwave events that break current historical records at least once yearly.The study also suggests that heatwaves will not revert back towards preindustrial conditions for at least a millennium after net zero is reached, which “critically challenges the general belief that conditions after net zero will begin to improve for near future generations”.“The thing with net zero and heat waves is: we’re damned if we do, but we’re completely stuffed if we don’t,” the study’s lead author, Prof Sarah Perkins-Kirkpatrick of the Australian National University, said. “We’re already locked into a certain amount of warming.” Sign up to get climate and environment editor Adam Morton’s Clear Air column as a free newsletterStabilising global heating at 1.5C or 2C would still result in impacts “that we haven’t yet experienced, including worse heatwaves”, she said. “The thing is, if we delay net zero – up to 30 years and even longer – those impacts are only going to get worse. We’re already locked into some, but the longer we leave net zero, the worse it’s going to be.”“[In Australia] you have the Coalition basically saying: net zero is useless, it’s pointless, it’s not worth it, it’s going to cost us too much money,” she said. “Well, it’s going to cost us even more if we don’t even get to net zero by 2050.”“The silver lining to this sort of study, if there is one, is that we have time to adapt … so when these heatwaves occur, we’re as prepared for them as possible,” she said. “We know the impacts of heatwaves – there’s so much understanding about the health impacts, ecosystem impacts, impacts on financial services.“What those adaptation strategies look like – that remains to be seen,” she said. “Those conversations can start now.”The modelling was done using Australia’s global climate simulator, known as Access, and defined a heatwave as at least three consecutive days where temperatures are above the 90th percentile for maximum temperature.skip past newsletter promotionSign up to Clear Air AustraliaAdam Morton brings you incisive analysis about the politics and impact of the climate crisisPrivacy Notice: Newsletters may contain information about charities, online ads, and content funded by outside parties. If you do not have an account, we will create a guest account for you on theguardian.com to send you this newsletter. You can complete full registration at any time. For more information about how we use your data see our Privacy Policy. We use Google reCaptcha to protect our website and the Google Privacy Policy and Terms of Service apply.after newsletter promotionProf David Karoly, a decorated climate change scientist and councillor with the Climate Council, who was not involved in the research, said the findings were not surprising.“There is a clear relationship between the cumulative emissions of carbon dioxide in the atmosphere and global mean temperatures,” he said.Karoly added that the study’s results were interesting but one caveat was that there were uncertainties in the modelling relating to potentially important processes such as rainfall changes, because the geographical representation of Australia and other regions in the Access model was of a lower resolution than for other climate simulators.

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