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There's growing opposition in China to the government's one-child policy, which has resulted in having too many boys. Males may soon find it difficult to find a wife and an aging population may hurt the nation's economic growth.

Sen. John Ensign told his Republican colleagues on Tuesday that he's sorry for having an affair with a married staffer. They say they accepted his apology. But the scandal is taking a toll on the senator's party back home.

Utah now has the toughest law in the nation banning texting and driving. It also uses a video on a case in which two men were killed by a texting driver to deter people from the activity. In the month since its release, the video has had 370,000 downloads, and requests are coming from other states to show it.

Until his arrest in 2004, nuclear scientist A.Q. Khan — the father of Pakistan's atomic bomb — ran a vast smuggling network that sent nuclear materiel to Iran and Libya. In his book Peddling Peril: How the Secret Nuclear Trade Arms America's Enemies, weapons expert David Albright explains how Khan's network continues to threaten global security.

KPBS Investigative Reporter Joanne Faryon traces your beef from the cattle ranches to the feed lots to your dinner plate.

A controversial new research paper in Science magazine says Hurricanes Katrina and Rita helped build new coastal wetlands. The report concludes that big storms -- rather than rivers -- are the main source of new material for the marshlands that help protect the coast.

Being healthy (or being unhealthy) is really just a result of the sum of our habits; the more healthy habits we have, the more likely we will benefit by having good health. The good news about habits is that they can be developed or changed, with a little focus and a plan.

Creating ethanol from corn is less energy efficient than other possible sources, like switchgrass and other "woody" plants. And ethanol is just one part of the alternative-energy mix, which also includes wind power and fuel cells, Ira Flatow says in a new book.

Three weeks after Chicago's first-round rejection in the bidding for the 2016 Summer Games, Olympic athletes and sports executives are demanding major change in the U.S. Olympic Committee. At stake, some say, is support for American athletes and the quest to host Olympic Games in the United States.

One in 20 adults in the US complain of disturbing dreams, and more than twice that many children and adolescents also experience frequent nightmares, yet few chronic nightmare sufferers imagine that it is a treatable problem. We'll talk about nightmares with leading sleep disorder specialist Dr. Barry Krakow.