From unstable slopes to rock falls, thawing permafrost will have many consequences for mountain regions, including the Swiss ...

The frozen layers of Earth’s permafrost have long been a mystery, hiding secrets from thousands of years ago. Climate change, ...

In this video we show how warming temperatures are slowly thawing permafrost and affecting the stability of Swiss mountains.

Understanding Permafrost Permafrost is frozen ground that remains solid for at least two consecutive years. It is prevalent ...

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 ...