The soil on Mars may contain microbial life! Joop Houtkooper of the University of Giessen, Germany, will declare on Friday the Viking spacecraft may have found signs of a weird life form based on hydrogen peroxide on the subfreezing, arid Martian surface. His analysis of one of the experiments carried out by the Viking spacecraft suggests that 0.1 percent of the Martian soil could be of biological origin. That is roughly comparable to biomass levels found in some Antarctic permafrost, home to a range of hardy bacteria and lichen. Developing....