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Alexander Kholodov

An iceberg melts in Kulusuk, Greenland near the Arctic Circle, Aug, 16, 2005. A new report finds permafrost in the Arctic is thawing faster than ever before.

Critical permafrost research in Russia disrupted by war in Ukraine

Environment

Most of the world’s permafrost lies in Russia. Critical research looks at how melting permafrost contributes to global warming. But sanctions against Russia this year have disrupted field work and threatened collaborations among scientists.