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Scientists eavesdropping in trees have decoded a high stakes game of hide and seek. Katydids rely on ultrasound to find mates and listen for bats, which use ultrasound to find the bugs, and eat them.

More than half a million children born in the U.S. have ended up in Mexico because their parents were deported.

Families who've fled their storm-ravaged island have arrived in Orlando. Schools have opened their doors, but the uncertainty and stress have taken a toll on just about everybody.

Fierce fighting has spread outside Sudan's capital, Khartoum, and across the country, as the forces of two warring military leaders battle for control.

We spoke to teen activists at the Girl Up event in Washington, D.C., this week. They had a lot to say about everything from buzzwords that make them mad to the best ways to de-stress.

More than 200 migrants die attempting to cross the Southwest border each year. Slowly, scientists at a Texas laboratory are seeking the story of their bones.

As break-ins and fires raged in the first days of protests over the killing of George Floyd, Minneapolis seemed to descend into a security vacuum. So volunteers stepped in to try to fill the void.

This week marks the anniversary of the 1937 massacre, in which Dominican soldiers targeted Haitians living near the Dominican-Haitian border. A team from NPR's Latino USA gathered survivors' memories.

A group of legal professionals is crossing the island trying to help. Meanwhile, the agency says it's finding "innovative and creative ways" to reach people in isolated communities.

One month after the shootings in Parkland, thousands of schools are becoming sites of protest. At 10 a.m., students walked out for 17 minutes — one minute for each Parkland victim who died.