NASA's Valkyrie robots set the table for human life on Mars

In this May 2, 2016 photo, researchers watch a six-foot-tall, 300-pound Valkyrie robot walk slowly at University of Massachusetts-Lowell's robotics center in Lowell, Mass. "Val," one of four sister robots built by NASA, could be the vanguard for the colonization of Mars by helping to set up a habitat for future human explorers. NASA spokesman Jay Bolden says the agency aims to get to Mars by 2035 and it'll be the Valkyries or their descendants paving the way.