Arctic Tundra Has Long Helped Cool Earth. Now, It's Fueling Warming.
Briefly

The Arctic has transitioned to a carbon source over the past two decades, releasing more CO2 than it absorbs due to warming temperatures and thawing tundra.
Year after year, the Arctic looks vastly different than it did 20 years ago, highlighting rapid and alarming changes in this vital ecosystem.
The 2024 Arctic Report Card emphasized that, for the 11th consecutive year, the Arctic was significantly warmer than the rest of the globe, demonstrating escalating climate change.
The period from October 2023 to September 2024 recorded the second-warmest temperatures in the Arctic since 1900, showcasing the urgency of climate action.
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