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Ancient Chompers Were Healthier Than Ours

By examining ancient dental plaque, researchers have concluded that prehistoric humans' diets made for healthier mouths. The addition of flour and sugar to modern diets may have set the stage for a near-constant state of oral disease.

This Year's Flu Vaccine Falters In Protecting Elderly

This year's flu shot looks like it's unusually poor at protecting the elderly. The flu vaccine's only about 27 percent effective overall for those ages 65 and older and just 9 percent effective against the flu strain causing the most illness, according to the federal Centers for Disease Control and Prevention. Melissa Block talks to Rob Stein.

Contagion On The Couch: CDC App Poses Fun Disease Puzzles

Dozens of kids get sick after a seemingly innocent birthday party. Was it the homemade ice cream or an accident in the pool? A new iPad app lets you solve outbreak puzzles just like real disease detectives. It's pleasing entertainment, if not as infectious as real video games.

Parents, Just Say No To Sharing Tales Of Drug Use With Kids

Kids whose parents have talked to them about the dangers of drugs are more likely to think that using isn't OK. That message can become mixed when parents bring up their own experience. There's no need to lie to a child, but parents should be careful about offering too much information.

Ask A Dentist: Facts To Sink Your Teeth Into

An apple a day keeps the doctor away. And, it turns out, the dentist--because that fibery skin is good for your teeth. Dentists Mark Ryder of the University of California San Francisco and Mark Wolff of New York University answer your toothy questions in this episode of our "Ask an expert" series.

How Wood Smoke is Dirtying Alaska's Air

In Fairbanks, Alaska, residents are using wood stoves to heat their homes during the frigid winter months. But, smoke created by these wood burners is contributing to some of the worst air pollution in the country. Cathy Cahill discusses air quality in the Last Frontier.