Walt Meier

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  • Senior Research Scientist, National Snow and Ice Data Center, NASA
Through the Paris Agreement, the world’s countries agreed to work to keep global warming well under 2 degrees Celsius. Saeed Khan/AFP via Getty Images

Why the US rejoining the Paris climate accord matters at home and abroad — 5 scholars explain

Morgan Bazilian, Colorado School of Mines; Deb Niemeier, University of Maryland; Edward R. Carr, Clark University; Kristie Ebi, University of Washington, and Walt Meier, NASA

The US is formally back in the Paris climate agreement as of today. As one of the world’s largest greenhouse gas emitters, it has a lot of work to do, with food security, health and safety at stake.
Sea ice, coming to an Antarctic sea near you. Brocken Inaglory

Data error discovery slows trend of growing Antarctic sea ice

Walt Meier, NASA

The amount of the earth’s ocean surface covered by sea ice has been continually observed by satellites and its extent estimated since 1978. The trend has been for shrinking sea ice in the Arctic and, more…

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