Clouds way up in the stratosphere act like a blanket, trapping heat in the Arctic and Antarctica. That could help explain why models keep underestimating how fast they’re warming.
New research suggests that ancient polar bear populations shrank as sea ice dwindled, adding weight to concerns about the predator's future as climate change melts the Arctic.
Scientists fear global heating may have shifted the region into a new era of disappearing ice with far-reaching consequences for the world’s climate and sea levels.
Now that July's sizzling numbers are all in, the European climate monitoring organization made it official: July 2023 was Earth's hottest month on record by a wide margin.
The Biden administration’s approval of a massive oil development in northern Alaska commits the U.S. to yet another decades-long crude project even as scientists urgently warn that only a halt to more fossil fuel emissions can stem climate change.
A new report from dozens of international scientists says it's inevitable the Arctic will lose its entire summer sea cover at least once over the next generation and probably a lot more often than that.