‘We Need Urgent Global Action’: Study Warns Humanity on Path to Trigger 16 Climate Tipping Points

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Original article by Jessica Corbett republished from Common Dreams under Creative Commons (CC BY-NC-ND 3.0).

A church spire of the submerged village of Graun protrudes from the nearly completely drained Reschensee Lake during construction work on May 23, 2024, near Resia, Italy. Climate change is thawing the permafrost that stabilizes alpine rocks, endangering numerous mountain passes across the European Alps. (Photo: Manuel Romano/NurPhoto via Getty Images)

“It is clear that we are currently on a dangerous trajectory,” said one University of Exeter professor.

Scientists on Wednesday released yet another study warning that humankind is at risk of triggering various climate “tipping points” absent urgent action to dramatically reduce planet-heating emissions from fossil fuels.

The new peer-reviewed paper, published Wednesday in the journal Earth System Dynamics, comes from a trio of experts at the United Kingdom’s University of Exeter and the University of Hamburg in Germany.

Climate scholars use the term “tipping point” to describe a critical threshold which, when crossed, “leads to significant and long-term changes of the system,” the paper notes. Debate over it “has intensified over the past two decades,” prompting several studies of specific risks.

“Climate tipping points could have devastating consequences for humanity,” said co-author Tim Lenton in a statement. “It is clear that we are currently on a dangerous trajectory—with tipping points likely to be triggered unless we change course rapidly.”

“We need urgent global action—including the triggering of ‘positive tipping points’ in our societies and economies—to reach a safe and sustainable future,” added the Exeter professor and Global Systems Institute director.

Lenton’s team calculated the probabilities of triggering 16 tipping points. They looked at the risks of serious damage to key glaciers, ice sheets, sea ice, and permafrost; the dieback of forests such as the Amazon; the die-off of low-latitute coral reefs; and the collapse of the Atlantic Meridional Overturning Circulation (AMOC), which is part of a crucial “global conveyor belt” of ocean currents.

To assess the risk of current policies triggering climate tipping points, the researchers focused on a scenario in which median warming of 2.8°C takes place by the end of the century.

On that pathway, the study says, “our most conservative estimate of triggering probabilities averaged over all tipping points is 62%… and nine tipping points have a more than 50% probability of getting triggered.”

Under scenarios with lower temperature rise, “the risk of triggering climate tipping points is reduced significantly,” the study continues. “However, it also remains less constrained since the behaviour of climate tipping points in the case of a temperature overshoot is still highly uncertain.”

The paper concludes that “rapid action is needed to reduce greenhouse gas emissions, since climate tipping points are already close, and it will be decided within the coming decades if they will be crossed or not.”

Lead author Jakob Deutloff shared that takeaway a bit more optimistically, saying that “the good news from our study is that the power to prevent climate tipping points is still in our hands.”

“By moving towards a more sustainable future with lower emissions, the risk of triggering these tipping points is significantly reduced,” he added. “And it appears that breaching tipping points within the Amazon and the permafrost region should not necessarily trigger others.”

▶️New paper from Jakob Deutloff, Hermann Held and Tim Lenton highlights the need for action to prevent triggering climate tipping points. More on this at The Global Tipping Points conference @exeter.ac.uk Register now! global-tipping-points.org/conference-2…esd.copernicus.org/articles/16/…

Global Systems Institute (@gsiexeter.bsky.social) 2025-04-23T08:45:40.637Z

The paper was published during Covering Climate Now’s joint week of media coverage drawing attention to the 89% of people worldwide who want their governments to do more to address the global crisis; ahead of a Global Systems Institute conference on tipping points this summer; and just over six months away from the next United Nations climate summit, COP30, in Brazil.

While some governments are trying to prevent the worst-case scenario by taking action to cut emissions, U.S. President Donald Trump has made clear since returning to office in January that he aims to deliver on his pro-fossil fuel campaign pledge to “drill, baby, drill.”

On the heels of the hottest year in human history, Trump is working to gut key agencies, ditched the Paris climate agreement, and has taken executive action to boost planet-wrecking coal, gas, and oil, including declaring a national energy emergency.

Original article by Jessica Corbett republished from Common Dreams under Creative Commons (CC BY-NC-ND 3.0).

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Fossil Fuels Blamed as 84% of World’s Coral Reefs Hit by Worst Bleaching Event Ever Recorded

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Original article by Julia Conley republished from Common Dreams under Creative Commons (CC BY-NC-ND 3.0).

This underwater photo taken on June 15, 2024 shows divers amongst bleached corals around Koh Tao island in the southern Thai province of Surat Thani. 
(Photo: Lillian Suwanrumpha/AFP via Getty Images)

“The magnitude and extent of the heat stress is shocking,” said one marine scientist.

A year after scientists warned the world was seeing its fourth mass coral bleaching event, rising ocean temperatures fueled by greenhouse gas emissions have now devastated 84% of Earth’s coral reefs—with likely knock-on effects for about a third of all marine species and 1 billion people whose lives and livelihoods are directly impacted by the health of the “rainforests of the sea.”

Coral Reef Watch at the U.S. National Oceanic and Atmospheric Administration (NOAA) released its latest data on Wednesday, showing the current bleaching event has become the most widespread on record, impacting reefs from the Indian Ocean to the Atlantic and Pacific.

The news comes three months after scientists confirmed 2024 was the hottest year on record. Last year, meteorologists also found that sea surface temperatures in the North Atlantic were about 2°F higher than the 1990-2020 average and nearly 3°F above the average in the 1980s.

Unusually warm ocean waters cause corals to expel algae that give the reefs their bright color and deliver nutrients, supporting the immense biodiversity that is normally found within the reefs. Prolonged bleaching can kill coral reefs.

“The magnitude and extent of the heat stress is shocking,” marine scientist Melanie McField, the founder of the Healthy Reefs for Healthy People initiative in the Caribbean, told Reuters. “Some reefs that had thus far escaped major heat stress and we thought to be somewhat resilient, succumbed to partial mortalities in 2024.”

Derek Manzello, director of Coral Reef Watch, told The Guardian that some reefs that had been considered safe from the impact of rising ocean temperatures have now been bleached.

“Some reefs that had thus far escaped major heat stress and we thought to be somewhat resilient, succumbed to partial mortalities in 2024.”

“The fact that so many reef areas have been impacted,” he said, “suggests that ocean warming has reached a level where there is no longer any safe harbor from coral bleaching and its ramifications.”

The current coral bleaching event began in January 2023. That same year, scientists were alarmed by an ocean heatwave off the coast of Florida that rapidly bleached the continental United States’ only living barrier reef.

That event prompted NOAA to introduce a new coral bleaching alert scale from Level 1—significant bleaching—to Level 5, at which point a reef is approaching mortality.

Another ocean heatwave last year threatened Australia’s Great Barrier Reef, eight years after nearly half of the coral in some northern parts of the 1,400-mile reef was killed by a mass bleaching event.

But recent major bleaching events affecting specific reefs have not compared to the current widespread devastation in the world’s oceans.

“Reefs have not encountered this before,” said Britta Schaffelke, coordinator of the Global Coral Reef Monitoring Network, told The Guardian. “With the ongoing bleaching it’s almost overwhelming the capacity of people to do the monitoring they need to do. The fact that this most recent, global-scale coral bleaching event is still ongoing takes the world’s reefs into uncharted waters.”

The other three mass bleaching events on record occurred from 2014-17, with 68% of the world’s reefs affected; in 2010, when 37% were impacted; and in 1998, when 21% suffered bleaching.

The report from Coral Reef Watch followed the Trump administration’s under-the-radar release of climate change data that minimized NOAA’s findings about the level of planet-heating carbon dioxide emissions in the atmosphere. President Donald Trump also issued an executive order demanding sunset provisions for every existing energy regulation and notified companies that they can seek exemptions to clean air regulations.

Joerg Wiedenmann, a marine biologist at the Coral Reef Laboratory at the University of Southampton in England, emphasized that taking action to stop the heating of the world’s oceans could protect coral reefs, the marine species they provide habitats to, and the communities they support by protecting coastlines and providing fishing and tourism jobs.

“If we manage to decrease ocean warming,” Wiedenmann told The Washington Post, “there is always a chance for corals to recover.”

Original article by Julia Conley republished from Common Dreams under Creative Commons (CC BY-NC-ND 3.0).

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‘Sick’: Trump Marks Earth Day With Layoff Notice for Hundreds of EPA Staff

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Original article by Jessica Corbett republished from Common Dreams under Creative Commons (CC BY-NC-ND 3.0).

Demonstrators march during a “Hands off the EPA” rally outside the Environmental Protection Agency office in Ann Arbor, Michigan, on Earth Day, April 22, 2025. (Photo: Jeff Kowalsky/AFP via Getty Images)

“The only people who will benefit from their firings are corporate polluters.”

As defenders of the planet marked Earth Day with pledges to fight the destructive agenda of U.S. President Donald Trump, some green groups on Tuesday responded with alarm to the administration’s plans for layoffs at the Environmental Protection Agency.

Several news outlets obtained the notice that EPA Assistant Deputy Administrator Travis Voyles sent on Monday evening to staffers with the Office of Environmental Justice and External Civil Rights as well as regional EJ divisions, warning of a reduction in force (RIF) that will cut 280 employees and reassign about 175 others this summer.

“This action is necessary to align our workforce with the agency’s current and future needs and to ensure the efficient and effective operation of our programs,” Voyles said. “With this action, EPA is delivering organizational improvements to the personnel structure that will directly benefit the American people and better advance the agency’s core mission of protecting human health and the environment.”

The Washington Post noted that “the news comes months after the agency placed 171 of the office’s employees on administrative leave and then reversed course, reinstating dozens of regional employees in offices across the country,” and as decision-makers at the EPA have been weighing how to implement Trump’s executive order targeting diversity, equity, and inclusion (DEI).

“It’s a gut punch but long expected,” said an employee who was put on leave in February and spoke with the Post on the condition of anonymity. “Announcing a RIF of the EJ program on the eve of Earth Day is sick and shows exactly who they are.”

Joyce Howell, executive vice president of the American Federation of Government Employees Council 238 that represents over 8,400 EPA workers nationwide, toldReuters that “decimating our agency and environmental justice workforce goes against our oath to protect human health and to keep our planet healthy and habitable for future generations.”

In a Tuesday statement, Sierra Club executive director Ben Jealous similarly said that “the Trump administration is determined to destroy the stated mission of the Environmental Protection Agency to protect human health and the environment. All of us deserve to have clean air to breathe, safe water to drink, and be protected from toxic pollution.”

“Instead, the Trump administration is selling us out to corporate polluters by actively working to slash clean air and water protections and laying off critical environmental justice staff,” he continued. “The people that Donald Trump is putting out of work are hardworking, dedicated civil servants who have devoted their careers to protecting our clean air and water and securing a livable future for us all. The only people who will benefit from their firings are corporate polluters.”

Chitra Kumar, a former official with the impacted EPA office who’s now managing director at the Union of Concerned Scientists’ Climate and Energy Program, said in a statement that “the layoff notice sent to employees claimed their dismissal would ‘better advance the agency’s core mission of protecting human health and the environment,’ which is the height of hypocrisy given that these staffers are working to reduce pollution and toxins in the communities suffering the most harm.”

“Scientific data shows that, due to historic and ongoing injustices, communities overburdened by polluting industries, smog-forming traffic, and contaminated waterways and soil are predominantly low-income, Black, Brown, and Indigenous. Exposure to consistently higher levels of pollution increases the risk of asthma, heart and lung ailments, cancer, and even death,” said Kumar, who took aim at EPA Administrator Lee Zeldin.

“Zeldin and the Trump administration continue to focus on propping up the profits of coal, oil, and gas companies and other big polluters who take advantage of every loophole available at the expense of public health. This is about all of us, our children, and grandchildren,” she stressed. “If Administrator Zeldin goes forward with this destructive move, he will be responsible for ending decades of work intended to help set right the harmful legacy of pollution in overburdened communities in a handout to big polluters.”

Kumar pointed out that “this is also part of the Trump administration’s larger ongoing strategy to dismantle EPA and its core functions and undermine its very mission, which is to help keep all people in America safe. In the time ahead, Zeldin is expected to launch a repeal, or ‘no enforce’ order, for a host of science-backed environmental regulations and engage in a wholesale ‘reorganization’ of the agency, including gutting the Research and Development Office that produces science undergirding EPA decisions.”

As criticism of Zeldin and Trump’s plans for the EPA mounted, people protested against the administration in communities across the country. Aru Shiney-Ajay, executive director of the youth-led Sunrise Movement, said in a statement that “Donald Trump, backed by fossil fuel billionaires, is waging a full-scale assault on the very lifesaving protections that Earth Day was created to demand.”

While Republicans currently control the White House and both chambers of Congress, some elected Democrats used Earth Day to advocate for policies that would protect the planet. Multiple senators used the day to promote bills that would protect the Pacific and Atlantic oceans from offshore oil and gas drilling.

Original article by Jessica Corbett republished from Common Dreams under Creative Commons (CC BY-NC-ND 3.0).

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Climate Crisis Deniers Explain Why They Like U.S. Energy Secretary Chris Wright

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Original article by Geoff Dembicki republished from DeSmog

U.S. Energy Secretary Chris Wright speaks to ARC by video. Credit: Marc Fawcett-Atkinson

In exclusive interviews, they called the Trump administration official “terrific,” “very smart,” and someone who “gets it.”

In mid-February, U.S. Energy Secretary Chris Wright described the global effort to stabilize greenhouse gas emissions in dark and conspiratorial terms.

“Net zero 2050 is a sinister goal,” he told the Alliance for Responsible Citizenship (ARC), an international gathering of conservatives convened by Canadian podcaster, author, and anti-climate powerbroker Jordan Peterson. “It’s certainly been a powerful tool used to grow government power [and], top-down control, and shrink human freedom.”

Then in March, Wright did a speech at the 43rd annual CERAWeek where he attacked the Biden administration’s climate policies as a “quasi-religious” agenda “that imposed endless sacrifices on our citizens.”

Those views put Wright, formerly a CEO with the fracking company Liberty Energy, far outside the Paris Agreement consensus among many world leaders and heads of major corporations that climate change is an urgent issue that requires fundamental changes to our global energy system.

But Wright’s reactionary statements are winning him praise from fossil fuel advocates who acknowledge that human-caused climate change is real but deny that it presents existential threats to civilization – what watchdog nonprofits such as the Center for Countering Digital Hate refers to as “the new denial.” 

In exclusive interviews with DeSmog and Canada’s National Observer conducted during the ARC conference, three prominent figures who deny there is a climate emergency explained why they’re excited that Wright holds one of the most consequential cabinet posts in the Trump administration, with one referring to the U.S. energy secretary as “a good friend.”

Bjorn Lomborg speaks about his most recent book during a press briefing at ARC. Credit: Marc Fawcett-Atkinson

Bjorn Lomborg

One particularly influential climate crisis denier is Bjorn Lomborg, a Danish political scientist who for decades has been trying to convince policymakers and the public that there are more important global challenges to address than climate change. This is the subject of his most recent book, Best Things First, which Lomborg was promoting at ARC. Last year, Peterson personally presented a copy of the book to Elon Musk.

“We’ll have to wait and see if he actually reads it,” Lomborg said of Musk in an interview with DeSmog and Canada’s National Observer at the conference.

Lomborg, who is an advisor to ARC, said during a keynote speech that efforts to transition off fossil fuels are a “green fantasy.” Lomborg acknowledges that climate change is real but claims, contrary to decades of scientific and economic evidence, that it will be relatively easy and painless for humankind to adapt.

Those arguments have resonated with Wright, who during a 2020 podcast referred to Lomborg’s previous book False Alarm as “fantastic,” and earlier this year described him as a “friend” on LinkedIn.  

Asked what he thinks about Trump’s pick for energy secretary, Lomborg replied: “Look, Chris Wright is a great guy and he’s very smart. And I’m very happy that we can get a more sense-based approach to how we do energy.”

Part of that, according to Lomborg, is acknowledging — despite low-carbon investment surpassing $2 trillion in 2024 — that a transformative global shift to green energy isn’t happening anytime soon. “We’re not there yet,” he said. “And that, I think, is what Chris Wright can help us to do, which is to say, ‘let’s be realistic now and let’s find smarter ways to have greener energy sources in the future.’”

Scott Tinker does a speech at ARC. Credit: Marc Fawcett-Atkinson

Scott Tinker

During his 13-minute presentation at ARC, Scott Tinker outlined his view that energy has to be affordable, reliable, and clean, criteria that in his view disadvantages renewable energy. “If you want 100 percent clean you don’t get much of these other things,” he told the conference. “There are trade-offs in the real world.”

Tinker runs an organization called Switch Energy Alliance that creates videos about energy and climate change for classrooms, museums, and professional training sessions. The organization says that it wants an “energy-educated future that is objective, nonpartisan, and sensible.”

But Tinker tends to promote the benefits of fossil fuels while downplaying the urgency of addressing global temperature rise. During a podcast interview in March, Tinker said it was “a very strange form of economic colonialism” to argue against developing world countries burning fossil fuels “because we’ll wreck the climate.” We shouldn’t fear a bit of atmospheric warming, Tinker added, urging listeners to instead consider “all the positive things” countries gain from oil, gas, and coal.

Wright has used similar language, telling a gathering of African leaders in March that it would be “a paternalistic post-colonial attitude” for the U.S. to stand in the way of their fossil fuel resources.

The similarities between Wright’s and Tinker’s views aren’t a coincidence. Tinker told DeSmog in an interview at ARC that he and the U.S. energy secretary have known each other for years. “Chris is a good friend,” Tinker said. “We’ve bounced a lot back and forth.”

One other area they seem to agree on is rejecting carbon dioxide’s legal status as a pollutant in the U.S., which helps provide the basis for the Environmental Protection Agency to regulate emissions. That’s been a long-time goal of climate denial organizations such as the CO2 Coalition and Heartland Institute.

“We shouldn’t confuse [CO2] with being a pollutant,” Tinker said.

Robert Bryce speaks at ARC. Credit: ARC / YouTube

Robert Bryce

For years Robert Bryce has been on a mission to convince the world that renewable energy can never replace or out-compete coal, gas, and oil. Previously a senior fellow with the Manhattan Institute— a think tank with a long history of accepting fossil fuel money and questioning the scientific consensus on climate change — Bryce now attacks climate solutions as an author, speaker, and filmmaker.

During his speech at ARC, he claimed that “we are inundated with climate catastrophism,” and argued without evidence that the primary motivation for environmentalists to be opposed to fossil fuels is because their organizations have “enormous” budgets, saying “it’s a big business.”

Bryce is a long-time proponent of nuclear energy, something he shares in common with Wright, who stepped down as a member of the board of directors at the nuclear company Oklo after he was confirmed as energy secretary in February.

“Chris gets it,” Bryce said in an interview with DeSmog. “Chris knows what the score is. He’s a natural gas guy, a hydrocarbon guy. He’s promoting nuclear power. Hopefully this administration, now that they’re actually talking about nuclear, can actually move the ball forward, it’s overdue.”

Bryce and Wright also seem to share opposition to carbon capture and storage, a technology widely favored by oil and gas producers, which tout it as key to reducing emissions from their operations despite it being widely used to pull more oil from the ground. Under Wright, the U.S. Department of Energy is considering cutting billions of dollars’ worth of funding for projects utilizing the technology.

“There is only one reason why any of these hydrocarbon companies are doing carbon capture,” Bryce said. “Subsidies, that’s it.”

“It will never work at scale,” he added. “Once you get that CO2 super-compressed and you’re pushing it down underground, there are very few places where you can actually sequester it. So it’s a lot of money wasted.”

This special investigation between Canada’s National Observer and DeSmog was produced in collaboration with the I-SEA and TRACE Foundation.

Original article by Geoff Dembicki republished from DeSmog

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Climate Disinformation ‘Normalised’ on French TV and Radio, Report Finds

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Original article by Joey Grostern republished from DeSmog

Credit: Pexels

New findings from an alliance of NGOs challenges the belief that climate falsehoods are confined to social media.

Climate disinformation was routinely broadcast in news programmes across French TV and radio in the first three months of 2025, with 128 verified cases identified by an alliance of NGOs.

Using AI to identify misleading narratives, which were then reviewed by fact-checkers, the alliance assessed programmes classed as “news” by the French broadcast regulator ARCOM from 19 TV and radio stations.

A preliminary report was produced by the French NGOs Data For Good, QuotaClimat, and Science Feedback. The study also identified 379 cases of ‘discourses of delay’ – arguments intended to slow the transition to carbon neutrality by undermining climate science, solutions or experts – which focused particularly on discrediting advocates of net zero. The final results will be published in September.

“We expected to find cases, but not a finding of this magnitude. It truly reflects how climate disinformation has been underestimated as a threat by the news media,” said Eva Morel, secretary general of QuotaClimat.

“This is a call to action: climate disinformation is being normalised, and we need trusted sources of information to counter it before it is too late.”

The majority of these attacks (61 percent) were aimed at discrediting solutions to the climate crisis, while 13 percent attempted to deny or minimise the scientific consensus on climate change.

Private media companies were responsible for 81 percent of climate disinformation broadcast. One station – Sud Radio – broadcast one-third of all the cases identified by the researchers. 

The station, owned by the consultancy firm Fiducial, attracts over 4.5 million monthly listeners, and was the first to receive a warning from the French broadcast regulator ARCOM in 2024 for broadcasting climate science denial. Sud Radio was approached for comment.

The same year, the regulator levied at €20,000 fine against another TV station, CNews, for a similar broadcast violation.

The report highlights how the success of anti-climate political parties across the Western world is fuelling climate disinformation on the news.

The researchers found a “significant spike in climate disinformation” during the week of Donald Trump’s inauguration in January, with almost half of the disinformation referencing the new president’s views on climate change.

“Given the growing influence of governments that openly deny climate change around the world, and the rising media and electoral traction of political parties positioning themselves on this issue, the permeability of traditional media to climate disinformation during geopolitical events is alarming,” the report states.

For example, Philippe Karsenty, the spokesperson for ‘Trump France’, said during an interview with BMFTV on 21 January: “we’ve been lied to for years” about climate change, which the interviewer did not correct.

The report alleges that broadcasting such a comment without a correction is in direct breach of an agreement that BMFTV renewed with ARCOM in December 2024. Namely, the agreement states that BFMTV commits to “ensuring honesty of information in its programming” and “distinguishing between facts and commentary” when presenting on “controversial issues”. BMFTV was approached for comment.

The alliance recommends that newsrooms expand coverage of environmental issues, support journalist training in environmental literacy, and introduce live fact-checking teams for interviews.

The alliance also urges ARCOM to respond to complaints of climate disinformation with “speed and proportionality”. It encourages advertisers to reassess their partnerships with broadcasters who spread climate disinformation and raise concerns with the stations.

The growing prominence of climate disinformation on broadcast channels is an issue across the Western world. As revealed by DeSmog, one-third of presenters on the right-wing platform GB News expressed climate science denial on air in 2022. GB News, which is co-owned by the hedge fund manager Paul Marshall, has given dozens of appearances to groups that reject basic climate facts.

However, the UK’s broadcast regulator Ofcom has so far refused to investigate the channel for spreading false climate claims.

Original article by Joey Grostern republished from DeSmog

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