NPR News

There's new information in the shooting of Trayvon Martin, the 17-year-old Florida boy who was fatally shot by George Zimmerman last month. Zimmerman told police that Martin assaulted him, and a family spokesman confirms Martin was suspended from school at the time of his death. Guest host Jacki Lyden speaks with Miami Herald reporter Frances Robles.

For much of the past decade, journalist Rachel Maddow has hosted her own radio and TV shows. And for much of that time, the popular MSNBC host has been thinking about how the United States uses military force — and how it starts and end wars.

Maddow's new book Drift: The Unmooring of American Military Power traces how U.S. national intelligence agencies have taken over duties that were once assigned to the military, and how this shift has increased the public disconnect from the consequences of war.

The debate over coronary bypass surgery versus stenting goes back decades.

Studies have been inconclusive, but doctors and patients have voted with their feet in favor of the less-invasive procedure — clearing clogged arteries and propping them open with tiny scaffolds called stents.

U.S. doctors do at least two stenting procedures these days for every coronary bypass operation.

The Justice Department's 'systematic concealment" of evidence that might have helped the late Sen. Ted Stevens, R-Alaska, defend himself in a corruption case will get a fresh airing Wednesday, when special prosecutor Henry Schuelke offers Senate testimony about his blistering 500-page report.

He's due to be before the Senate Judiciary Committee at 10 a.m. ET.

Home prices fell in most major metropolitan areas again in January, according to the widely watched S&P/Case-Shiller Home Price Indices report.

There are fresh fears about the infiltration of Afghan security forces by anti-government and anti-American insurgents after the discovery of 10 or 11 (depending on the media report) suicide vests inside the headquarters of that country's defense ministry and the arrest of more than a dozen soldiers.