New evidence supports the theory that Mars may have been the home to life forms at one time: NASA researchers want to determine whether the planet could support, or ever has supported, life. The nutrients are among a few positive indicators they have gleaned since the Phoenix Mars Lander began collecting and testing soil samples last month. Early findings, including ice crystals and nutrients, point toward water — the chemical basis for life. Phoenix co-investigator William Boynton of the University... Read more