Permafrost — the permanently frozen ground that underlies much of the Arctic land surface — is thawing in many parts of the Arctic. [1] As permafrost thaws, it releases the powerful greenhouse gas ...

As permafrost laced with buried ice thaws, the ground collapses, forming craters or lakes. This story appears in the September 2019 issue of National Geographic magazine. Sergey Zimov, right ...

As the world heats up, vast numbers of microbes frozen in vast amounts of ice are set to thaw. We must prepare ...

The vast frozen terrain of Arctic permafrost thawed several times in North America within the past 1 million years when the world's climate was not much warmer than today, researchers from the United ...

The new model estimated the permafrost area for the Northern Hemisphere for 2010 to 2015 to be 14.4 million square kilometers, containing 563 gigatons (Gt) of carbon in the latter year.

Professor Nathan D. Brown, author of the publication in "AGU Advances" magazine, explains: "In the Northern Hemisphere, much of the ground is permafrost, meaning it is frozen year-round.

In the Arctic, permafrost plays a crucial role in building infrastructure. However, as the region warms and permafrost thaws, infrastructure is threatened as the ground shifts beneath the built ...