When it comes to indestructible species, the cockroach is a kitten compared with the nematode. Nematode worms thrive in desert, mountain, and ocean environments. Nematodes aboard the space shuttle Columbia even survived after the spacecraft disintegrated during reentry in 2003. Now Belgian biologist Gaetan Borgonie has discovered a new species of nematode nearly a mile underground, where no other animal has ever been found...