From www.universetoday, July 31, 2008:
The Phoenix Mars lander finally was successful in delivering a fairly fresh sample of Martian soil to the Thermal and Evolved Gas Analyzer (TEGA) oven on Wednesday and a “bake and sniff” test identified water in the soil sample. “We have water,” said William Boynton of the University of Arizona, lead scientist for TEGA. “We’ve seen evidence for this water ice before in observations by the Mars Odyssey orbiter and in disappearing chunks observed by Phoenix last month, but this is the first time Martian water has been touched and tasted.”
This is potentially huge… there is now a chance that life could exist, does exist, or once existed, on the Red Planet. If life is found, it will be among the most important discoveries in the history of mankind… perhaps the single most important.