University of New Hampshire professor Yitang Zhang announced this week that he has come close to solving a centuries-old problem: proving the twin prime conjecture. Host Scott Simon gets an explanation from Weekend Edition Math Guy Keith Devlin of Stanford University.
It's been a long slog already for the bipartisan immigration overhaul proposed by the Senate's Gang of Eight.
The legislation has been the target of more than 300 amendments during days of debate and votes by the Senate Judiciary Committee. But while the bill has largely held its own so far, its prospects for getting through Congress remain uncertain.
In Judiciary Committee Chairman Patrick Leahy's view, the immigration overhaul is "moving very well."
"It's moving a lot faster than people said it would," says Leahy, a Vermont Democrat.
When the American Psychiatric Association releases its new Diagnostic and Statistical Manual of Mental Disorders-- DSM-5 -- this weekend, lots of journalists and commentators will refer to it as "psychiatry's bible."
That's a term that makes the manual's authors and other mental experts cringe.
The Portland Thorns women's soccer team drew 17,000 screaming fans to its recent home opener. That's a huge number and one that dwarfed turnout for the other seven teams in the new National Women's Soccer League (NWSL). The NWSL is the latest attempt to bring sustainable women's pro soccer to the U.S. Soccer federations in the U.S., Mexico and Canada help fund it. NPR's Tom Goldman examines how the Thorns and the NWSL have done so far.
Gerry Leone was the district attorney for Middlesex County in Massachusetts when three people were murdered in a house in the Boston suburb of Waltham. He told reporters that police suspected the assailants and the victims knew each other.
An unsolved triple murder in the Boston suburbs is getting a closer look in the wake of the marathon bombings. One of the victims may have been a friend of bombing suspect Tamerlan Tsarnaev. That's prompting authorities to revisit the 2011 case.
The murders took place in Waltham, Mass. On Sept. 12, 2011, police responded to a house in the leafy suburb a few miles west of Boston.
President Obama's commencement speeches seem to be his real State of the Union addresses. On May 5, he told Ohio State students that they were graduating into a "healing" economy.
Credit Pablo Martinez Monsivais / AP
But last year, he reminded Air Force Academy graduates that they were the first class in nearly a decade to graduate with "no Americans fighting in Iraq."
Credit Charles Dharapak / AP
Throughout all his graduation speeches, Obama sounds themes of shared responsibility, as when he told University of Michigan students in 2010 that "government is us."
Credit Carolyn Kaster / AP
President Obama's commencement speeches often seem more about the big-picture state of the union than do his State of the Union addresses. On May 5, he told Ohio State students that they were graduating into a "healing" economy.
President Obama checks to see if it's still raining as a Marine holds an umbrella for him during a joint news conference with Turkish Prime Minister Recep Tayyip Erdogan at the White House on Thursday.
President Obama's first term was free from the kind of scandal that consumes every ounce of political oxygen in Washington. Now, in light of a trio of controversies, his supporters find themselves in the uncomfortable and unaccustomed position of having to defend some hard-to-defend events.
Democrats have offered up a range of responses. They view the issues — Benghazi, the IRS and the Justice Department snooping on The Associated Press — as separate issues that shouldn't be lumped together.