American Dana Vollmer celebrates after her gold medal win Sunday in the women's 100-meter butterfly swimming final at the Aquatics Centre in the Olympic Park.
Matt Slocum/AP
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A cross-sectional X-ray shows what's called a "sunken chest." The bright circle near the bottom is the spine; the gray blob on the right is the heart.
Living LLC/Getty Images
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When it comes to learning how to drive, your teen is probably as harried as you are. Research shows that scare tactics meant to instill caution, though, are less effective than kind words.
iStockphoto.com
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Samsung Electronics' Galaxy S (left) and Apple's iPhone 4 are displayed at the headquarters of South Korean mobile carrier KT. Apple claims some of Samsung's designs violate its patents.
Ahn Young-joon/AP
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