Three Questions From Cutting-Edge Climate Science

An annual gathering of scientists this week offered a glimpse into the latest efforts to answer some of the most intriguing questions about our warming planet.

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

Wildfires and thawing permafrost are causing the region to release more carbon dioxide than its plants remove, probably for the first time in thousands of years.

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