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Scientists have found the gene that drives a virus to kill gypsy moth caterpillars in a particularly gruesome way. The virus forces the caterpillars up to the tops of trees, where they melt and rain down virus onto the leaves below.

With unemployment at 9.1 percent and the economy as the top issue of the 2012 presidential race, the president faces a tough fight for re-election. Still, he might find some encouragement in the history books. Host Audie Cornish chats with presidential historian Michael Beschloss about Obama's odds for re-election.

Severe flooding in Pakistan's Sindh Province has affected eight million people, and covered millions of acres of cropland. This disaster follows last year's epic floods, which were also in southern Pakistan. The country is also dealing with the fallout of an accusation by a top American military official that Pakistan's intelligence agency supported insurgent attacks on the U.S. Embassy in Kabul.

The former CEO of Godfather's Pizza has risen to the top of the pack in the GOP presidential race. Herman Cain says the substance of his ideas — including his 9-9-9 tax plan — is propelling his surge. But analysts say he doesn't have the field organization that a winning candidate typically has.

The Newsweek editor looks at how women helped bring about peace in Liberia; how they're changing the state of marriage throughout Asia; and the rise of Christine Lagarde to the top of that notoriously male-dominated institution, the International Monetary Fund.

New jobs numbers came out Friday, reporting employers added more than 100,000 workers to their payrolls. That's better than many forecasters were expecting, but not good enough for the 14 million Americans who are still out of work. NPR's Scott Horsley reports on what the numbers tell us about the economy and what they mean for President Obama.

The embryos would not be used for reproduction, but rather for the creation of embryonic stem cells. Many scientists believe that human embryonic stem cells made this way could revolutionize medicine.

The four top congressional leaders held a closed-door meeting Thursday to assess where they stand on the coming government funding and debt-ceiling deadlines. As has become typical in recent years, some conservative House Republicans appear to be the stumbling block with their insistence that any deal repeal or defund Obamacare.

Tacloban City, the hardest hit city, faced a 40-foot storm surge and gusts of wind topping 200 mph. Cadavers lined the streets, scores of buildings were flattened and the airport terminal was damaged by the surge.

Nearly 1 in 4 tell pollsters they're having a hard time paying for needed prescription medicine; 1 in 3 say they struggled to pay bills from hospitals or doctors last year.