Warning: Space May Wreak Havoc on Your Body Orbital Path

Going to Mars is hot right now, just ask Matt Damon. But would you go if you knew your bones would turn into something called "pee brittle"?

Former astronaut Michael Massimino reveals the uncomfortable side of liftoff. And Dr. Jennifer Fogarty from NASA's Human Research Program elaborates on the physical challenges humans face with longterm weightlessness.