Heidi Glenn

Ten-year-old triplets Maddy, Zoë and Nick Waters share everything from a birthday to a bedroom. But in a StoryCorps booth in Bloomington, Ind., they discover — even as they finish each other's sentences — that there are still some things they needed to learn about each other.

Social media companies are under pressure to block terrorist activity on their sites, and Facebook recently detailed new measures, including using artificial intelligence, to tackle the problem.

The measures are designed to identify terrorist content like recruitment and propaganda as early as possible in an effort to keep people safe, says Monika Bickert, the company's director of global policy management.

The Trump administration's talk of cracking down on undocumented immigrants has frightened many people living in the country illegally. And it has deterred some domestic abuses victims from appearing in court for fear they'll be spotted by agents from Immigration and Customs Enforcement, says Denver City Attorney Kristin Bronson.

Bronson tells NPR's Rachel Martin that four women — victims of what Bronson calls physical and violent assault — have not pursued cases.

In a new book, The Complacent Class, economist Tyler Cowen argues that the United States is standing still.

People have grown more risk averse and are reluctant to switch jobs or move to another state, he says, and the desire to innovate — to grow and change — has gone away.

In an interview with NPR's Rachel Martin, Cowen says he's worried that more and more communities are self-segregating — by income, education or race.