We're learning more today about how controversial new guidelines on mammograms came about. The group that issued the recommendations last week, the U.S. Preventive Services Task Force, studied the benefits and risks of mammograms, as well as how often women should have them, incorporating new understanding of how cancers grow. The group's recommendations that annual mammograms aren't effective for women in their 40's surprised at least one researcher. We speak with Gina Kolata, science reporter for the New York Times.

Major bills to regulate the finance industry are inching forward in Congress. So what's being proposed? We'll speak with Michael Greenberger, professor of law at the University of Maryland. Greenberger argues for more oversight over financial instruments like derivatives.

The trial of the former Khmer Rouge prison chief, Kaing Guek Eav, better known as Comrade Duch, is entering its final stages. Duch is accused of running a prison where thousands of people were tortured and murdered in the late 1970s. As many as two million people are believed to have died under the Khmer Rouge, the Maoist regime that controlled Cambodia from 1975 to 1979. But that history hasn't been a part of the school curriculum for Cambodia students. That's changing now thanks to a new textbook. The BBC's Guy De Launey has the story.

A recent report from the WHO found that in 2007, 9 million children died before their fifth birthday in the world's poorest countries, and many of those deaths — usually from TB or diarrhea — were preventable. Elizabeth Sheehan is trying to prevent some of those deaths by turning used shipping containers into health clinics in developing countries. She says "shipping Containers litter the world. They're often used once and they sit there." Her group is called Containers to Clinics.

"The Twilight Saga: New Moon" grossed $140 million in theaters this past weekend. The film, based on the second of the series of wildly popular books by Mormon author Stephanie Meyer, features a vampire as a romantic hero. But as Brigham Young University film curator James D'Arc tells us, at the beginning of the last century, vampire imagery was used to demonize those of the Mormon faith. With Jim, we look at the Bram Stoker novel "Dracula" and its impact on the 1911 anti-Mormon book "The Love Story of a Mormon" and film "Trapped by the Mormons."