Yedoma is a term Russians used to describe a mound that rises above the surrounding terrain. A Russian scientist introduced it to scientific literature in the 1930s to describe ice-rich ...

A team of European scientists has revived a 48,500-year-old "zombie" virus from the Siberian permafrost. Permafrost is land that has been continuously frozen for two or more consecutive years.

Yedoma permafrost contains a huge amount of organic material, and covers more than 1 million sq km (386,000 sq miles) across Siberia, Alaska and Canada.

A previously unknown source of the strong greenhouse gas nitrous oxide has been found in East Siberian Yedoma permafrost. Published in Nature Communications today, the observation was made by an ...

Investigating Deep Sediment Emissions. In this study, the authors focused on Goldstream Lake (GSL) in Alaska, a Thermokarst lake within Yedoma permafrost.

Yedoma contains up to 80 per cent ice and is therefore also called ice complex. The ground ice can thaw very abruptly, causing the bedrock to collapse and erode.

Carbon that has been locked away for thousands of years could escape into the atmosphere if global warming thaws large patches of frozen ground in Alaska and Siberia as expected.