News Archives Astrobiology News 21 March 2007 By Keith Cowing March 21, 2007 Researchers uncover protection mechanism of radiation-resistant bacterium, Uniformed Services University of the Health Sciences NASA Scientists and Teachers to Study Mars in the Mojave Desert, NASA ARC Keith Cowing SpaceRef co-founder, Explorers Club Fellow, ex-NASA, Away Teams, Journalist, Space & Astrobiology, Lapsed climber. Follow on Twitter