For Lt. Colonel John Schwemmer, the scenery is all too familiar. This is his sixth tour in Iraq, and he's back doing a job that he's been tasked with before: training Iraqi soldiers. This time, he feels, they're getting it right.
It's not going to be enough to slake the thirst of the elusive Mars bunny, but scientists say new research seems to support the theory that what looks like a bone-dry red planet during the day could be dotted with tiny puddles of salty water at night.