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One researcher said the findings support calls "for urgent and concrete actions to reduce greenhouse gas emissions and associated warming."
An international science project on Wednesday published a study in the journal Nature showing that glaciers have lost an average of 273 billion metric tons of ice annually since 2000—depleting freshwater resources, driving sea-level rise, and underscoring the need for sweeping global action to significantly reduce planet-heating pollution.
The Glacier Mass Balance Intercomparison Exercise (GlaMBIE) team compiled major studies to estimate global mass change from 2000, when glaciers—excluding Antarctica and Greenland's ice sheets—held about 121,728 billion metric tons of ice, to 2023.
The researchers found that during that period, the world lost 5% of all glacier ice, with regional losses for the full two decades ranging from 2% on the Antarctic and Subantarctic islands, to 39% in Central Europe.
That's a loss of 6,542 billion metric tons total or 273 billion metric tons per year, "the equivalent of three Olympic swimming pools per second," noted France's National Center for Scientific Research (CNRS).
Glaciologist Michael Zemp, who co-led the study, said in a statement that the annual figure "amounts to what the entire global population consumes in 30 years, assuming three liters per person and day."
"Every tenth of a degree warming that we avoid saves us money, saves us lives, saves us problems."
Although the researchers highlighted the annual average, they also emphasized that the rate of glacier ice loss "increased significantly" from 231 billion metric tons annually during the first half of the study period to 314 billion metric tons per year in the second half. In other words, the amount of ice being lost surged by 36% between the two ranges.
Zemp, a professor at Switzerland's University of Zurich and director of the World Glacier Monitoring Service, toldAgence France-Presse that the findings are "shocking" and warned that many smaller glaciers "will not survive the present century."
Stephen Plummer, an Earth observation applications scientist at the European Space Agency, said that "these findings are not only crucial for advancing our scientific understanding of global glacier changes, but also provide a valuable baseline to help regions address the challenges of managing scarce freshwater resources and contribute to developing effective mitigation strategies to combat rising sea level."
The ice loss over the GlaMBIE study's full timeline led to about 18 mm or 0.7 inches of sea-level rise. The researchers projected future losses that lead to 32-67 mm, or 1.26-2.6 inches, of sea-level rise by 2040.
"We are facing higher sea-level rise until the end of this century than expected before," Zemp told AFP, referring to the latest projection from the United Nations Intergovernmental Panel on Climate Change (IPCC).
"You have to reduce the greenhouse gas emissions, it is as simple and as complicated as that," Zemp said. "Every tenth of a degree warming that we avoid saves us money, saves us lives, saves us problems."
The GlaMBIE project manager, Samuel Nussbaumer, similarly toldOceanographic, that "our observations and recent modeling studies indicate that glacier mass loss will continue and possibly accelerate until the end of this century," which underpins the IPCC's "call for urgent and concrete actions to reduce greenhouse gas emissions and associated warming to limit the impact of glacier wastage on local geohazards, regional freshwater availability, and global sea-level rise."
The team's findings were released during the U.N.'s International Year of Glaciers' Preservation and the Decade of Action for Cryospheric Sciences—and they "will feed into the next IPCC report, due in 2029," according to CNRS.
Scientists from around the world who were not involved with the study were alarmed by its revelations—which come after the hottest year in human history and amid humanity's failure to curb planet-heating emissions, largely from fossil fuels.
Martin Siegert, a professor at the United Kingdom's University of Exeter, said in a statement that "this research is concerning to us, because it predicts further glacier loss, which can be considered like a 'canary in the coal mine' for ice sheet reaction to global warming and far more sea-level rise this century and beyond. The IPCC indicates 0.5-1 meters this century—but that is with a 66% certainty—hence 1/3 chance it could be higher under 'strong' warming, which unfortunately is the pathway we are on presently."
Andrew Shepherd, a professor at Northumbria University, another U.K. institution, explained that "glacier melting has two main impacts; it causes sea-level rise and it disrupts the water supply in rivers that are fed by meltwater."
"Around 2 billion people depend on meltwater from glaciers and so their retreat is a big problem for society—it's not just that we are losing them from our landscape, they are an important part of our daily lives," he said. "Even small amounts of sea-level rise matter because it leads to more frequent coastal flooding. Every centimeter of sea-level rise exposes another 2 million people to annual flooding somewhere on our planet."
"Urgent action is needed now more than ever to prevent a catastrophic ecological collapse," said one campaigner in response to the new research.
A new study released Thursday warns that international experts may have been overly cautious in their warnings about widespread ecological collapse such as a catastrophic breakdown in the Amazon rainforest, which the Intergovernmental Panel on Climate Change said last year could come by the year 2100.
Scientists at Rothamsted Research and Southampton, Sheffield, and Bangor Universities in the United Kingdom found that as numerous factors such as water stress and pollution from mining compound the degradation of ecosystems in forests and bodies of water, the environments can be pushed toward tipping points more quickly.
The IPCC, suggests the study, which was published in Nature Sustainability, has been issuing its warnings about a tipping point in the Amazon while focusing on just a single factor, such as deforestation or planetary heating. Both of those drivers could interact with other environmental changes and accelerate tipping points such as dieback—in which the rainforest ecosystem would be replaced by one resembling a dry savanna.
"It is not clear whether the IPCC estimate for a tipping point in the Amazon forest before 2100 includes the possibility for interacting drivers and/or noise; if not, our findings suggest that a breakdown may occur several decades earlier," reads the report. "This would occur where local-scale failures in elements (such as species populations, fish stocks, crop yields, and water resources) combine with more extreme events (such as wildfires and droughts) to precondition the large-scale system, already vulnerable to the influence of other large-scale tipping elements, to collapse earlier—a meeting of top-down and bottom-up forces."
The researchers used computer models to assess the potential fates of two lake ecosystems and two forests, allowing for 70,000 adjustments of variables.
In the study, up to 15% of ecological collapses occurred as the result of new events or environmental stressors, even in cases where the primary stress affecting the ecosystem remained at the same level.
At Lake Erhai in southern China, for example, "abrupt lake eutrophication [the presence of excessive nutrients or minerals] was initially perceived to have been driven by transgression of a threshold in nutrient enrichment driven by agricultural runoff but historical analysis has shown that the shift was also affected by lake water-level management, seasonal climate, and fish farming," reads the study.
Because international experts may not have been considering variables such as water resources when they warned that the Amazon is headed for a climate tipping point by the turn of the next century, study co-author Professor Simon Willcock of Rothamsted Research toldThe Guardian, "We could realistically be the last generation to see the Amazon."
"It could happen very soon," he added.
The scientists said their research shows that even if some aspects of an ecosystem are managed sustainably, preventing stresses including planetary heating and extreme weather events—both being driven by the continued extraction of fossil fuels—is crucial for avoiding tipping points.
"Urgent action is needed now more than ever to prevent a catastrophic ecological collapse," said Tanya Steele, CEO of the World Wildlife Fund in the U.K., in response to the research.
Willcock noted that the study's findings suggest that an accelerated recovery of ecosystems is possible with a multi-pronged approach that would address deforestation, planetary heating, and other stresses.
"Potentially if you apply positive pressure," Willcock told The Guardian, "you can see rapid recovery,"
"The stunning amount of new LNG export deals being approved underscores the climate hypocrisy of the Biden administration."
Climate groups called out U.S. President Joe Biden's administration on Thursday after a federal agency gave a green light to three liquefied natural gas projects in Texas despite local opposition and scientists' calls to swiftly transition away from fossil fuels.
The Federal Energy Regulatory Commission (FERC)—which has two Democrats, two Republicans, and one vacancy—issued orders on Glenfarne's Texas LNG project, NextDecade's Rio Grande LNG export terminal, and Enbridge's related Rio Bravo Pipeline.
"This president has the gall to say he cares about environmental justice and the climate emergency."
In response to the moves, Greenpeace USA campaigner Destiny Watford pointed to the Intergovernmental Panel on Climate Change (IPCC) report released last month as well as projections from the International Energy Agency (IEA).
"Someone needs to show President Biden the latest IPCC report, where it clearly says that we need to move away from dirty energy sources like LNG if we want to keep our planet livable," Watford declared. "U.S. LNG export capacity is on track to exceed the IEA's net-zero emissions estimate for global LNG trade by 2030."
"This is a level that we cannot overstep if we want to avoid the worst impacts of climate change—and the U.S. could pass that mark by itself," she stressed. "The stunning amount of new LNG export deals being approved underscores the climate hypocrisy of the Biden administration. This president has the gall to say he cares about environmental justice and the climate emergency while continuing to sanction limitless production and export of oil and gas."
\u201cWe're here on HWY 48 near Port Isabel, TX protesting the @FERC approving Rio Grande LNG, Texas LNG, and the Rio Bravo Pipeline. We're calling attention to the destruction our community and sacred lands face from LNG & SpaceX.\n @VocesUnidasRGV https://t.co/sfD3MLZCnp\u201d— Another Gulf Is Possible (@Another Gulf Is Possible) 1682022540
FERC's moves follow the Biden administration's recent approval of an LNG project in Alaska, which came on the heels of allowing ConocoPhillips' controversial Willow oil project in the state. The president is also under fire for last weekend's Group of Seven statement that leaves the door open to future gas investments.
Oil Change International U.S. program co-manager Allie Rosenbluth argued Thursday that "the approval of any new fossil fuel project is a failure of the Biden administration's stated commitment to take action on both climate change and environmental justice."
"It's bad for the communities in Brownsville and the Rio Grande Valley who will suffer the worst consequences of this massive industrial plant on their health and well-being, it's bad for our country as laggards to climate commitments, and it's bad for our planet, as the clock is ticking to stave off the worst climate disasters," she said of FERC's new orders.
"Industry false solutions, such as carbon capture and certified gas, are making these projects even more dangerous," Rosenbluth continued, highlighting that "the company behind Rio Grande LNG claims it will 'certify' the greenhouse gas intensity of LNG to be sold from the proposed export terminal."
Citing a new report from Oil Change International and Earthworks on gas certifiers, the campaigner explained:
The investigation uncovered failures with monitoring technology, documented the concerns of methane emissions experts, revealed an absence of data transparency, and exposed conflicts of interest. Furthermore, the report detailed how the gas and LNG industry cannot rely on simply cleaning up to align with climate goals. They must also plan for a phaseout [of] gas production. This evidence calls into question the degree to which the gas certification process is misleading gas markets, giving consumers and investors a false sense of security about the environmental impacts of methane gas.
In Texas, "the fight is far from over," Rosenbluth said. "This March, after years of trans-Atlantic organizing, French bank Société Générale withdrew from Rio Grande LNG and no final investment decision on the LNG terminal has been made. People around the world will continue to fight these projects and demand a just transition to renewable energy."
\u201cA new report from @Earthworks and @PriceofOil shows how the gas industry is selling "certified gas" as a solution to its out of control methane pollution.\n\nI spoke with authors @JoshEisenfeld and @LorneStockman about this new form of industry deception \u2b07\ufe0f\nhttps://t.co/50UmK1Yw8Q\u201d— Emily Sanders (@Emily Sanders) 1681913140
The Houston Chroniclereported Thursday that Glenfarne's LNG project "has less financial traction" than NextDecade's terminal.
The newspaper also flagged a disagreement between FERC's two Democratic commissioners:
In August, the D.C. Circuit Court of Appeals ruled FERC needed to more closely examine Rio Grande LNG's impact on climate change and local communities. Commissioner Allison Clements said the commission had failed to do what was requested of it and that moving forward without doing so creates "a lose-lose situation" that would invite more legal challenges and deprive potentially impacted communities of the chance to comment on the developments.
"This procedural corner-cutting represents a gobsmacking departure, frankly, from the lessons I took away from the environmental justice roundtable we held just a month ago," Clements said.
FERC Chairman Willie Phillips, viewed as more moderate on climate issues than his predecessor Richard Glick, said he thought the commission had reached "an appropriate middle ground."
"Importantly, today's order takes an unprecedented and bipartisan step to protect environmental justice communities from potential concerns about the project's effect on air quality," Phillips said. "The commission is for the first time on its own accord, requiring that the project sponsors ensure that the overlapping construction and operation of a project do not cause any significant air quality impacts on environmental justice communities."
Phillips is notably a Biden appointee. When the president selected him in September 2021, green groups sounded the alarm, given his record in government and as a private attorney, and branded the candidate as "a crony of the fossil fuel industry."
Carrizo Comecrudo Tribal Chairman Juan Mancias said Thursday that "the court sent Rio Grande LNG and Texas LNG back to FERC for a review because these gas projects are cutting corners to try and build on our sacred lands. FERC did a piss-poor job, once again, of reviewing the dangers that LNG will bring to our people: pollution, risks of explosions, and destruction of our sacred sites."
"Neither FERC nor the LNG companies have ever consulted with the Carrizo Comecrudo Tribe of Texas," Mancias added. "FERC is promoting and perpetuating the sacrifice zones that come with short-sighted colonialism."
"We are disappointed, but unfortunately not surprised, that FERC has failed us again."
The tribe is far from alone in opposing the projects. Sierra Club Gulf Coast campaign representative Rebekah Hinojosa said that "for nearly a decade, our community has made it clear to FERC that we oppose Rio Grande LNG, Rio Bravo Pipeline, and Texas LNG because this is environmental racism," but the agency and industry "are forcing dangerous gas plants on the Rio Grande Valley that do nothing to help our community so fossil fuel corporations can profit."
"We are disappointed, but unfortunately not surprised, that FERC has failed us again by conducting a haphazard review of Texas LNG and Rio Grande LNG and by deciding to move forward with these destructive gas projects that will destroy some of our remaining wildlife habitat, be the biggest polluters in our poor community, and raise energy prices for families across the country," she said.
"We're not backing down," Hinojosa vowed. "FERC will hear our outrage."