May 17, 2013 — Of all the current Washington scandals, the one involving the IRS appears to have the most staying power. It rolls into one package an agency many love to hate, partisan suspicions and the American appetite for conspiracies.

May 18, 2013 — Afghanistan is believed to be home to world-class mineral deposits, valued at up to $3 trillion and offering hope for the country's economic future. But in the current environment of uncertainty, investors are nervous and it could be many years before Afghanistan strikes pay dirt.

May 18, 2013 — Atmospheric scientist Ira Leifer installed special air sensors on a camper, then drove from Florida to California, measuring methane levels all along the way. More than 6,000 readings later, he found some noticeable spikes, especially around petrochemical plants and urban areas like Los Angeles.

May 18, 2013 — Research shows that prime-time television isn't a bad place to find portrayals of working women. Working moms and working women over 40 are another story.

May 18, 2013 — Dan Brown, author of the blockbuster The Da Vinci Code, is back with his first novel in four years. Inferno follows academic hero Robert Langdon on a chase through Italy as he attempts to avert a biological catastrophe.