NASA's Scott Kelly spent a year on board the International Space Station to test the effects of space travel on his body, while his identical twin and fellow astronaut <br /> Mark Kelly remained on earth. WIRED's Robbie Gonzalez speaks with Dr. Francine Garrett-Bakelman, lead author of "The NASA Twins Study: A multidimensional analysis of a year-long human spaceflight," to hear about the groundbreaking results of their study and to find out what it means for the future of human spaceflight.
