Focus 

Permafrost

Nearly one-quarter of the land in the Northern Hemisphere is underlain by permafrost. As this frozen soil melts, it releases large amounts of carbon dioxide and methane, and also alters surface hydrology. In this focus, we present a collection of research and comment pieces that look at the current effects of melting permafrost and assess how this vast carbon store could influence climate in the future.

Content

From the archives