NEW - Scientists have revived a "zombie" virus that spent 48,500 years frozen in permafrost "to better understand the risks" it poses for animals and humans.

https://twitter.com/disclosetv/status/1633562416033193986

Warmer temperatures in the Arctic are thawing the region's permafrost - a frozen layer of soil beneath the ground - and potentially stirring viruses that, after lying dormant for tens of thousands of years, could endanger animal and human health.