Melissa Block

Yesterday, NASA announced that astronaut Scott Kelly will retire from the space agency as of April 1st. Kelly holds the U.S. record for the most time spent in space.

For nearly a full year, he zoomed along at 17,500 miles per hour — orbiting 230 miles above earth — on the International Space Station. And for those million or so of us who follow him on Twitter, Cmdr. Kelly's year in space gave us a mind-expanding view of planet Earth.

Kelly posted spectacular photos — awesome, in the true sense of the word. He called them, earth-art.

Morning Edition host David Greene talks to Melissa Block about his recent reporting trip to Cuba. Specifically, he speaks about a young man named Isbel Diaz Torres, a new kind of Cuban activist. Greene argues that Torres' interests serve to extend Cuba's socialist revolution, rather than oppose it.