There's a widely held assumption that a slight imbalance in male births has its start at the very moment of conception. But researchers say factors later in pregnancy are more likely to explain the phenomenon. CNRI/Science Source hide caption

itoggle caption CNRI/Science Source

Shots - Health News

Why Are More Baby Boys Born Than Girls?

Does the imbalance start at conception or are there factors during pregnancy that favor the birth of slightly more males than females? Researchers find clues that point to factors in the womb.

Dan Swangard, a 48-year-old physician from San Francisco, was diagnosed in 2013 with a rare form of metastatic cancer. Anna Gorman/KHN hide caption

itoggle caption Anna Gorman/KHN

Shots - Health News

Doctors With Cancer Push California To Allow Aid In Dying Kaiser Health News

Dr. Dan Swangard doesn't know if he would take lethal medications to hasten death. But as someone with metastatic cancer, he wants to have that choice. He's part of a suit to change California law.

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Tiny Desk Concerts

Sylvan Esso: Tiny Desk Concert

Performed softly in the light of day, the duo's year-old material feels fresh and lovable when performed outside of a dark, loud club setting.

Sen. Elizabeth Warren talked about 2016 to WBUR's Here & Now: "What I care about is that everyone who runs for president, who runs for any national office right now, talks about this core set of issues." Manuel Balce Ceneta/AP hide caption

itoggle caption Manuel Balce Ceneta/AP

It's All Politics

Elizabeth Warren On Hillary Clinton And Running For President

In an interview with Here & Now, the darling of the left again denies any interest in running, but her politics — and followers — will have an influence.

Smart phones contain a silicon chip inside the camera that might be used to detect rare, high energy particles from outer space. J. Yang/Courtesy of WIPAC hide caption

itoggle caption J. Yang/Courtesy of WIPAC

Joe's Big Idea

Want To Do A Little Astrophysics? This App Detects Cosmic Rays

Two physicists keen to detect a a very rare, high energy particle think you and I can help. The researchers are working on an app that would allow any smartphone to detect rare particles from space.

A little booze can't hurt: The Hy-Vee grocery chain has added a Market Grille to several of its locations in the Midwest and Great Plains. You can order drinks and dinner before or after you do your grocery shopping. Courtesy of Hy-Vee Market Grille hide caption

itoggle caption Courtesy of Hy-Vee Market Grille

The Salt

Grocery Stores Are Losing You. Here's How They Plan To Win You Back

Customers are choosing smaller markets, convenience stores, farmers markets and even dollar stores. The competition is forcing chains to innovate with in-store restaurants, delivery service and more.

A Secret Service agent brandishes a submachine gun while agents and police subdue a gunman who shot President Reagan, his press secretary, a policeman and a Secret Service agent in Washington on March 30, 1981. Ron Edmonds/AP hide caption

itoggle caption Ron Edmonds/AP

The Two-Way - News Blog

Judy Woodruff Recalls Assassination Attempt On President Reagan

John Hinckley Jr. tried to kill Reagan on March 30, 1981. Woodruff, then a reporter with NBC News, was there.

Seen here in 2012, Trevor Noah was announced Monday as the new host of The Daily Show on Comedy Central. Dominic Barnardt/Gallo Images/Getty Images for MTV hide caption

itoggle caption Dominic Barnardt/Gallo Images/Getty Images for MTV

Monkey See

5 Thoughts On Trevor Noah Taking Over 'The Daily Show'

Comedy Central announced Monday that the South African comedian will step into Jon Stewart's role later this year. It might not be the most obvious pick, but why make the most obvious pick?

Detective Mark Williams (right) speaks with an officer in Richmond, Va. A decade ago, amid a surge in violent crime, the city's police were identifying relatively few murder suspects. So the police department refocused its efforts to bring up its "clearance rate." Alex Matzke for NPR hide caption

itoggle caption Alex Matzke for NPR

U.S.

Open Cases: Why One-Third Of Murders In America Go Unresolved

Police today are identifying fewer murder suspects than they did a generation ago. One criminologist says that may be because departments are more focused on preventing crimes than on making arrests.

Olympic gold medalist Sanya Richards-Ross pulls on compression sleeves before a 400-meter race at the World Indoor Athletics Championships in Istanbul, Turkey, in 2012. Martin Meissner/AP hide caption

itoggle caption Martin Meissner/AP

Shots - Health News

Compression Clothing: Not The Magic Bullet For Performance KERA

Tight, elasticized socks, sleeves and T-shirts supposedly make you a better athlete. Alas, science is pouring some cold water on those alluring claims.

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