Now that astronaut and internet sensation Chris Hadfield is back on solid ground, he has some serious work to do. His time in space has changed his body in numerous ways. Trace explains why a zero ... more 
Now that astronaut and internet sensation Chris Hadfield is back on solid ground, he has some serious work to do. His time in space has changed his body in numerous ways. Trace explains why a zero gravity environment poses some major problems. less 
1 / 18
DNews
Wed, May 15, 2013 7:50 PM EDT