NPR Staff

In one of this year's most intense international competitions, the United States has come out as best in the world — and this time, we're not talking about soccer.

This week, the top-ranked math students from high schools around the country went head-to-head with competitors from more than 100 countries at the International Mathematical Olympiad in Chiang Mai, Thailand. And, for the first time in more than two decades, they won.

President Obama responded sharply this week when a reporter asked if he was "content" to celebrate the nuclear deal with Iran when at least three and possibly four Americans are being held in Iranian jails.

"Nobody's content," he said, "and our diplomats and our teams are working diligently to try to get them out."

At least one former American hostage thinks the deal is worth signing, despite the remaining hostages.

On Thursday, President Obama became the first sitting president in U.S. history to visit a federal prison, taking a tour of the El Reno Federal Correction Institution in Oklahoma. Earlier in the week, he addressed the NAACP in Philadelphia, calling for reforms in the criminal justice system — with the hopes of helping people who have served time turn their lives around.

Oshea Israel, whom listeners first met through StoryCorps in 2011, has done just that.

It's easy to think we're being virtuous when we fill up the blue recycling bin and put it on the curb. But it's clear we have embraced some magical thinking when it comes to what can be recycled.

Morning Edition asked its social media followers to share what puzzles them the most about the recycling process. Then, NPR's Dianna Douglas visited a waste management plant in Elkridge, Md., to get the answers from Michael Taylor, director of recycling operations for the plant.

Syria's civil war has created the worst refugee crisis in the world, with more than 4 million people fleeing the country. Millions more have been displaced inside Syria, though we rarely hear from them.

Over the past year, NPR's Morning Edition has spoken three times with Saeed al-Batal, a photographer and filmmaker who doesn't use his real name for security reasons.

The "E" in Wisconsin Gov. Scott Walker's newly unveiled presidential logo is a stylized American flag — as it turns out, one that looks remarkably similar to the logo for America's Best Contacts & Eyeglasses.

The company's CEO, Reade Fahs, said he doesn't mind but also that it's unlikely the governor hasn't seen the 18-year-old logo. "It's on hundreds of stores across the country. So assuming he's got good vision, he probably would have spotted it in his campaign travels. And we have lots of stores in Wisconsin too."

It's been wet in Texas this year — exceptionally wet, as a matter of fact. With record amounts of rain, Texas is more than a little hot, green and rife with happy insects.

Take the tarantula hawk, for example. In case you've never heard of it, it's a wasp that's so big, and so nasty, that it attacks tarantulas — who happen to be quite big and nasty themselves.

So, what does a happy tarantula hawk look like? Ben Hutchins, an invertebrate biologist with the Texas Parks and Wildlife Department, takes NPR's Wade Goodwyn through all the gruesome wasp-on-tarantula details.

When writer Ta-Nehisi Coates sat down at NPR's New York studios a few days ago, he got a little emotional.

It was the first time that Coates, who writes for The Atlantic, had held a copy of his latest book, Between the World and Me.

This book is personal, written as a letter to his teenage son Samori. In it, we see glimpses of the hard West Baltimore streets where Coates grew up, his curiosity at work on the campus of Howard University and his early struggles as a journalist.

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