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When hunter-gatherers started adding grains and starches to their diet, it brought about the "age of cavities." At least, that's what a lot of people thought. But it turns out that even before agriculture, what hunter-gatherers ate could rot their teeth. The problem: At least some of these ancients had a thing for acorns.

Even before family health issues arose, Cheney's campaign appeared to face dim prospects in the Wyoming GOP primary against Sen. Mike Enzi. One lesson from her now-ended bid: A famous political name only gets you so far.

Medicare spends about $20 billion each year on implanted medical devices. Nearly half of the total goes for orthopedic surgery. Yet doctors who were surveyed about implant prices could only accurately estimate the prices about one-fifth of the time.

The southwestern U.K. is getting slammed by huge waves whipped up by 70 mph winds accompanying a low-pressure system sweeping in from the Atlantic.

The birth of a baby is a joyous occasion, and an increasingly rare one in Portugal, where the birthrate has dropped 14 percent since the economic crisis began. The poorest state in Western Europe faces a demographic time bomb as its population ages, the workforce shrinks and youth are unemployed or going abroad.

European scientists were alarmed in 2008 when they discovered streams of methane bubbles erupting from the seafloor in Norway's high Arctic. This gas, which contributes to global warming, was apparently coming from methane ice on the seafloor. A follow-up study finds that methane bubble plumes at this location have probably been forming for a few thousand years, so they are not the result of human-induced climate change. But continued warming of ocean water can trigger more methane releases in the Arctic, with potentially serious consequences to the climate.

The Social Security Administration has long kept track of deaths so it can stop checks when recipients die. And while researchers have used the file for years, fraudsters have, too. So Congress is limiting access to the data — and that has everyone from bankers to genealogists concerned.

Morning Edition listeners test the physics of extreme cold with some home-made science experiments.

Mark Brown's raccoon Rebekah was confiscated after he posted videos of him dancing and showering with his pet. Tenn. law prohibits keeping native animals captured in the wild as pets. Brown tried but failed to get the law changed.

Bitterly cold temperatures and storms have already caused at least 15 deaths in recent days. Authorities remind everyone that it's important to be prepared and to stay inside if you can. That advice may seem obvious, but people do continue to take risks.