Wildlife

Worms Frozen for 42,000 Years in Siberian Permafrost Wriggle to Life

In Siberia, melting permafrost is releasing nematodes — microscopic worms that live in soil — that have been suspended in a deep freeze since the Pleistocene. Despite being frozen for tens of thousands of years, two species of these worms were successfully revived, scientists recently reported in a new study.

Their findings, published in the May 2018 issue of the journal Doklady Biological Sciences, represent the first evidence of multicellular organisms returning to life after a long-term slumber in Arctic permafrost, the researchers wrote.

However, the nematodes weren't the first organism to awaken from millennia in icy suspension. Previously, another group of scientists had identified a giant virus that was resuscitated after spending 30,000 years frozen in Siberian permafrost. (Amoebas are the only animal affected by this ancient attacker.)