Sure you're steamed. But teenagers tend to meet harsh words with even worse behavior, a study says. Katherine Streeter hide caption

itoggle caption Katherine Streeter

The next bed could cost you a lot if the hospital says you're there on observation. iStockphoto.com hide caption

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Sure, it's cute. But that voice! Lennart Tange/flickr hide caption

itoggle caption Lennart Tange/flickr

Pregnant doctors are less likely than other women to deliver their babies via C-section, recent research suggests. Economists say that may be because the physician patients feel more empowered to question the obstetrician. iStockphoto.com hide caption

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The underlying biology of age-related memory glitches — in old mice and old people — is different from what happens with Alzheimer's, recent research suggests. Anthony Bradshaw/iStockphoto.com hide caption

itoggle caption Anthony Bradshaw/iStockphoto.com

We know you'd rather skip the fasting and bowel prep. But that's the way we've always done it. iStockphoto.com hide caption

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Headlamps make cold nights cozier, but leave the fuel-burning lanterns and stoves outside. Gopal Vijayaraghavan/Flickr hide caption

itoggle caption Gopal Vijayaraghavan/Flickr