This bacterium shrugs off radiation doses that would kill a person 3,000 times over

Deinococcus radiodurans can survive ionizing radiation doses roughly 3,000 times the amount that would kill a human, its DNA shattering into hundreds of pieces in the process. It carries multiple copies of its genome and stitches the fragments back together within hours. Nicknamed 'Conan the Bacterium,' it's now studied for cleaning up nuclear waste sites.

— Wikipedia contributors, Deinococcus radiodurans — Extremophile radioresistance