The fungus Cladosporium sphaerospermum can use dangerous radiation to grow.
Read about it here.
Crazy stuff! Like something from a science fiction novel. But then again, I guess I shouldn't be surprised. When I went to Chernobyl, everything reminded me of something from a science fiction novel.
I'm surprised the article didn't mention whether or not the radiation-munching fungi could potentially be used to clean up contaminated areas. That was the first thing that popped into my head when I read it.