This model of a molar shows color-coded barium banding patterns that reveal weaning age.
Scientific Tooth Fairies Investigate Neanderthal Breast-Feeding
Our closest relatives, chimpanzees and gorillas, breast-feed their offspring for several years. Some baby orangutans nurse until they are 7 years old. Researchers found a way to test ancient teeth for clues about when humans cut nursing short.
Holder Acknowledges U.S. Citizens Killed In Drone Strikes
It is the first time the U.S. has said that Americans were killed in drone strikes.
Rescue Efforts Give Way To Recovery In Oklahoma
Officials think they've found all the survivors, and victims, of the massive tornado that devastated the community of Moore.
Think Obama's In Trouble? That Depends On Your Party
Obama's job approval ratings remain steady because Democrats are sticking with him.
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