With a rocket en route to the International Space Station, NASA tests the long-term effects of how genetically similar bodies change in different environments. Captain Mark Kelley describes this year-long space mission.March 27, 2015
UP NEXT
NPR's Ari Shapiro focuses on optimism and hope his new book
08:43
Bomani Jones: My show takes the serious, the fun and sports and brings it together
07:33
The Last Thing: Going for woke
02:34
How the myth of pulling yourself up by the bootstraps causes harm
08:48
Kerry Washington: 'Unprisoned' is about learning to love better and be better
07:53
Brand Up, Brand Down: March Madness, Ja Morant, vinyl records
