Radiation-eating Fungi
SEWilco writes "Fungus growths have been found in many extreme environments, including the Chernobyl reactor walls. Some fungi have been found whose growth is enhanced by radiation. I wonder if someone saved samples of the MIR-eating fungi."
The link for mir-eating fungi goes to an old slashdot story which itself points to a dead link. A usable link to the original story is here: http://www.space.com/news/spacestation/space_fungu s_000727.html