In places like Chernobyl and Fukushima , where nuclear disasters have flooded the environment with dangerous radiation, it makes sense that life might evolve ways to survive it. But one of the most radiation-resistant organisms ever discovered doesn't come from anywhere radioactive at all. An archaeon called Thermococcus gammatolerans is able to withstand an extraordinary radiation dose of 30,000 grays – 6,000 times higher than the full-body dose that can kill a human within weeks. In the