8 Health Stories To Watch In 2012

These events captivated the American public in 2011 — and they may matter even more in 2012. Keep an eye out.
If you flew on a plane this year, you were probably asked by an agent at airport security to assume the position — hands up, feet apart. Across the country, the U.S. government has installed full-body scanners, which are designed to generate detailed, three-dimensional contours of the body, so that security agents can more easily spot any weapons, from ceramic knives to explosives, that may be hiding under clothing and would be missed by metal detectors. Sounds like a good idea, but the problem lies in how the machines do their duty.

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