A study published in Nature on Thursday highlights that the rapid decline of Antarctic sea ice may represent a crucial tipping point for the global climate.
The research, which analysed ice cores, ship logs, and observational data, found that “a regime shift has reduced Antarctic sea-ice extent far below its natural variability of past centuries, and in some respects is more abrupt, non-linear and potentially irreversible than Arctic sea-ice loss.”
Shrinking ice reduces solar reflection, accelerating global warming and weakening the Antarctic Overturning Circulation, which regulates ocean heat, nutrients, and weather patterns.
Nerilie Abram, the study's lead author noted, “Once we start losing Antarctic sea ice, we set in train this self-perpetuating process.”
The loss of ice is already affecting wildlife, including emperor penguins that breed on the ice and krill that feed below it. Warming surface waters are also diminishing phytoplankton populations that absorb large amounts of atmospheric carbon.
Even with efforts to reduce carbon dioxide emissions, the study warns that Antarctic sea ice loss may continue over centuries, emphasizing the urgent need for climate action.
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Britain must urgently prepare for global warming of at least 2 degrees Celsius above pre-industrial levels by 2050, its climate advisers said on Wednesday (15 October), warning the country is ill-prepared for extreme weather that is already occurring.
Wildfires have destroyed about a third of Namibia's Etosha National Park, a roughly 20,000 square-kilometre (7,722 square-mile) tourist destination known for its wildlife, the presidency said.
Juneau, Alaska, is on high alert as floodwaters from the Mendenhall Glacier threaten to reach record levels, forcing residents in vulnerable areas to evacuate immediately.
Wildfires driven by powerful winds swept through Greece on Friday, from the southern outskirts of Athens to the region near Ancient Olympia.
At least 69 people have died and almost 150 injured following a powerful 6.9-magnitude earthquake off the coast of Cebu City in the central Visayas region of the Philippines, officials said, making it one of the country’s deadliest disasters this year.
A tsunami threat was issued in Chile after a magnitude 7.8 earthquake struck the Drake Passage on Friday. The epicenter was located 135 miles south of Puerto Williams on the north coast of Navarino Island.
The war in Ukraine has reached a strategic impasse, and it seems that the conflict will not be solved by military means. This creates a path toward one of two alternatives: either a “frozen” phase that can last indefinitely or a quest for a durable political regulation.
A shooting in Nice, southeastern France, left two people dead and five injured on Friday, authorities said.
Snapchat will start charging users who store more than 5GB of photos and videos in its Memories feature, prompting backlash from long-time users.
A team of Argentine paleontologists has uncovered one of the oldest known dinosaurs, a nearly complete skeleton of a long-necked herbivore that roamed Earth 230 million years ago in what is now La Rioja province.
An earthquake of magnitude 6.7 struck Papua province in Indonesia on Thursday, the United States Geological Survey (USGS) said.
Five days after historic floods that have killed at least 66 people and damaged 100,000 homes, Mexico is still struggling to provide aid to the worst-affected communities and locate 75 missing individuals, amid growing criticism of the government’s response to the crisis.
Indonesia's Mount Lewotobi Laki-laki erupted on Wednesday, shooting volcanic ash 10 km (6.2 miles) into the sky, the country's volcanology agency said, forcing authorities to raise the alert system to its highest level.
Britain must urgently prepare for global warming of at least 2 degrees Celsius above pre-industrial levels by 2050, its climate advisers said on Wednesday (15 October), warning the country is ill-prepared for extreme weather that is already occurring.
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