Bugs from the Deep May Be Window Into the Origins of Life American Association for the Advancement of Science

Simple life forms are turning up in a surprising variety of below-ground environments, potentially making up 50 percent of the Earth’s biomass, scientists said today at the AAAS Annual Meeting. From South African gold mines, to cooled seafloor lavas, these subsurface bugs have provided clues to the potential for life on Mars, and the diversity of possible fuel sources for life, including nuclear energy and toxic waste.