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Short Wave's Regina Barber and Margaret Cirino talk through how moths produce an anti-bat signal, why clownfish could be counting to 3 and the first GMO food crop sold directly to home gardeners.

The Chicago Botanic Garden announces the creation of a new coneflower -- in orange, not the usual purple. The flowering plant was derived from some 96 cross-breedings of hybrids in order to get the desired color and shape. Hear NPR's Michele Norris and Jim Ault, director of ornamental plant research at the garden.

Sen. John Kerry seeks to define his campaign by his combat experience in the Vietnam War -- a tour of duty that earned him three Purple Hearts and a Bronze and Silver star for valor. But Kerry's campaign has come under fire by a group of GOP-linked activists who question his wartime conduct in a television ad. NPR's Mara Liasson reports.

Hundreds of swimmers in Chicago joined the first open-water event on the Chicago River in a century, celebrating the city's progress in restoring a waterway once considered a toxic wasteland.

Zachariah Fike finds old military medals for sale in antique stores and on the Internet, tracks down the medals' owners, and returns them. So far, Fike — who earned a Purple Heart when he was wounded in Afghanistan on Sept. 11, 2010 — is 5 for 5.

Convenience is at an all-time premium — and a lot of smartphone apps promise to make many of the things we do every day easier. In a time-crunch or sheer laziness, how far will the apps take us?

NPR marks the 25th anniversary of a bouncing, purple T-Rex with oddly regular teeth, and a theme song that delighted toddlers, but to this day puts thousands of parents on edge.

The coronavirus outbreak led President Trump to close U.S. borders with Canada and Mexico last week. At the southern border, the closure is affecting life on both the U.S. and Mexico sides.

Dennis Pales helped found SOAR as a freshman three years ago. He says the group was spurred into action when an Ohio State student overdosed on fentanyl-laced cocaine at a campus-area bar.

Thousands of migrants continue to wait under a bridge in Texas for a chance to ask for asylum. The Biden administration is planning to deport many of them.