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The body contains 10 times more bacteria, fungi and other micro-organisms than human cells. Most of these species are harmless--although they can still cause illness if they wind up in the wrong place

People who work 11-plus hours a day are two-and-a-half times more likely to become depressed than those clock out after seven or eight; Also, ultrasounds could be the key to birth control for men; And, a special "What the Health" segment on babies.

The brightest gamma ray beam ever created- more than a thousand billion times more brilliant than the sun- has been produced in research led at the University of Strathclyde- and could open up new possibilities for medicine.

By David Fogarty SINGAPORE (Reuters) - Atmospheric levels of methane, 20 times more powerful than carbon dioxide (CO2) at trapping heat, stayed steady for two decades to 2006 on wider fertilizer use to grow rice or a surge in natural gas demand, according to two separate studies in the journal Nature. [More]

According to a soon-to-be-published study in the Journal of Occupational and Environmental Medicine, veterans from Iraq and Afghanistan are seven times more likely to report having lung problems compared with non-deployed vets. CBS News correspondent Michelle Miller reports.

We already know that cell phones carry all sorts of germs.

Tall, obese men are more than five times more likely to develop dangerous blood clots, new research shows

Shocking new study finds adverse events 10 times more common than previously believed