Enlarge / After thawing out, these tiny creatures started making clones of themselves. (credit: Michael Plewka) 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 […]
