The U.S. will shift some of the burden of defense to its allies, and it will equip them for it. One ally's equipment: nuclear submarines for South Korea.
Technology enabling virtual fences for pets is now being adapted for livestock. Ranchers near Yellowstone National Park are testing its ability to keep cows safe from grizzly bear attacks.
NPR's Ailsa Chang speaks with songwriter Amy Allen, who is shortlisted for the non-classical Songwriter of the Year Grammy Award for a second straight year.