24,000 Years in Ice Still Didn’t Kill These Ancient Critters

Rotifers are microscopic freshwater-dwelling multicellular organisms. They’re already known to withstand freezing (even in liquid nitrogen), boiling, desiccation, and radiation, and the group has persisted for millions of years without having sex. The humble yet remarkably hardy bdelloid rotifer has now surprised researchers yet again—a recent study unearthed 24,000-year-old Siberian permafrost and found living (or […]

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