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Many animals get their external marking -- such as, feathers, hair or scales-from genetics. But it turns out, the crocodile gets its head patterns differently. (Story aired on ATC on Dec. 11, 202.)

When researchers asked hospitals how much a total hip replacement would cost a 62-year-old woman paying cash, a surprising number couldn't or wouldn't say. Health care could learn something from the car industry about working with consumers, critics say.

Eleven climbers, all scarred in some way by the wars in Iraq and Afghanistan, tackle a Himalayan climb in Michael Brown's documentary.

Air bags stored in backpacks are saving the lives of backcountry skiers, snowboarders and snowmobilers. They look something like car air bags, but they work on an entirely different principle. These keep you safe simply by turning you into a larger object, and that helps you rise to the top of debris.

Obama administration's high tech officials to get the Issa treatment over Obamacare... Healthcare.gov is likely to running smoothly by November's end as promised... the health care law allegedly helped kill the immigration overhaul.

Faust, which won the top prize at the 2011 Venice Film Festival, offers a singularly visionary take on the classic tale of a man who sells his soul to the devil. It's the final installment in a "men of power" tetralogy from the director of Russian Ark.

The competition is fierce: the defending South Korean champion, a 15-year-old Russian phenom who has thrilled the figure skating world, and three Americans heading into Thursday in the top 10.

He was a top donor to the Republican Party, but his philanthropy crossed political lines. The Dallas Morning News reports that Simmons died Saturday in Dallas. He was 82.

In a recent Gallup poll, most named immigration the biggest problem confronting the nation. But past periods of heightened worries have been brief — and haven't brought about solutions.

As two climbers attempt Yosemite's most daunting cliff face, documentarian Nick Rosen, co-writer and co-director of Valley Uprising, explains the park's history of climbs and culture clashes.