Our closest relatives, chimpanzees and gorillas, breast-feed their offspring for several years. Some baby orangutans nurse until they are 7 years old.
But modern humans wean much earlier. In preindustrial societies, babies stop nursing after about two years. Which raises the question: How did we get that way? When did we make the evolutionary shift from apelike parenting to the short breast-feeding period of humans?
After five marathon sessions debating 150 proposed amendments, the Senate Judiciary Committee approved a landmark rewriting of the nation's immigration laws this week — and the bill emerged largely intact.
Three Republicans voted with the panel's 10 Democrats on Tuesday night to forward the bill to the full Senate. That strong showing followed a wrenching choice for Democrats on the committee: whether to risk shattering support for the bill by amending it to recognize equal rights for same-sex couples.
George Plimpton boxed with Archie Moore, played quarterback for the Detroit Lions, and played percussion for the New York Philharmonic. He did these jobs, and many others, as an amateur. Plimpton was a professional writer. A new documentary about his life makes the case that Plimpton's best story was his own story, as NPR's Joel Rose reports.
JOEL ROSE, BYLINE: When you listen to George Plimpton's voice, it's like hearing echoes of a New York that no longer exists.
A federal court is set to decide on the lawfulness of stop-and-frisk, New York City's controversial policing strategy meant to stop gun violence. The policy gives police officers wide discretion to stop, question, and in some cases, pat down people they suspect are carrying illegal guns.
When President Obama stepped to the lectern on Sunday to address Morehouse College's graduating class, he gave exactly the kind of speech that you give at Morehouse. The president told the graduating students that they had been trained and nurtured to be leaders. He linked their personal and professional successes to the well-being of their communities. This is part of the obligation of being a "Morehouse Man," he said.
Ali Shaheed Muhammad and Frannie Kelley on Kanye West
What happened over the weekend? At 8:34 on Friday night, Kanye West tweeted. He said he'd be premiering a song in a half hour and we'd have to do what he said to hear it – we'd have to go to a particular address and stand outside with other people and watch a video projected onto the side of a building. Of course, the first video of the video was up within minutes, so most people didn't have to do any such thing.
Suzanne Sells lost her house to Monday's tornado in Moore, Okla., but she's still helping other people.
Sells is a special education English teacher at Moore High School. It was spared a direct hit, but like other schools in town, it was closed Tuesday. Still, she showed up to let in a student who needed access to heart medicine that had been locked away.
We all know how the battle lines shake out: evangelical vs. scientist, believer vs. atheist. The culture war defined as science vs. religion is so overheated that it seems to be more of a caricature than a coherent, useful discussion. Unless, that is, someone is trying to stretch beyond the usual polarities.
Apple CEO Timothy Cook made a rare appearance on Capitol Hill on Tuesday, testifying after congressional investigators revealed that Apple avoided billions in taxes. Reporter Charles Duhigg of The New York Times and guest host Jennifer Ludden talk about how, as Duhigg writes, "technology giants have taken advantage of tax codes written for an industrial age."