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 ...

The Global Terrestrial Network for Permafrost (GTN-P) was established in 1999 by the International Permafrost Association to provide long-term field observations of active layer and permafrost thermal ...

See our Citation Policies for more details about how to structure your data citation. The Circum-Arctic permafrost and ground ice map is available via ftp in ESRI Shapefile format and Equal-Area ...

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 ...

A pair of ancient nematodes or microscopic roundworms that lived in the Pleistocene era, when woolly mammoths still roamed the Earth, have been revived by scientists. The surprising discovery ...

These reptiles have roamed the oceans for 100 million years. We've put them at risk, but with a little help, they're rebounding. Green sea turtles congregate near a dock in the Bahamas. They were ...