National

In his lab at George Mason University in Virginia, Sean Luke has all kinds of robots: big ones with wheels; medium ones that look like humans. And then he has a couple of dozen that look like small, metal boxes.

He and his team at the Autonomous Robotics Lab are training those little ones to work together without the help of a human.

In the future, Luke and his team hope those little robots can work like ants — in teams of hundreds, for example, to build houses, or help search for survivors after a disaster.

The 2016 NFL draft starts tonight so here's our comprehensive first-round mock draft.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

At first glance, real estate agent Theresa Mondale's listings don't sound too different from those of other agents trying to sell a piece of Montana paradise: 270 acres at the base of the Bitterroot Mountains completely surrounded by U.S. Forest Service land, stands of old growth fir and cedar trees, a spring with pure water.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

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