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By Virginia Gewin of Nature magazine A new screening test makes use of urine, rather than blood, to identify the men most at risk of prostate cancer, and may even provide information about how aggressive a tumor is likely to be. The standard screening test for prostate cancer is a blood test for a protein called prostate specific antigen (PSA)

Science Online New York City (or #SONYC on online social networks) is a monthly event happening in New York City. [More]

If you like to surf porn on the Internet, you've got company. [More]

By Karen Brooks AUSTIN, Texas (Reuters) - Oppressive heat baked the southern Central Plains on Wednesday as the region braced for another stifling day of triple-digit weather, forecasters said. [More]

In an age flush with dubious detox trends, one treatment is getting laid to waste this week: the colon cleanse. [More]

About a century ago, a new craze gripped the country's health conscious: mastication.

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The pathway to approving many new medical devices is broken beyond the point of repair, according to a new report from the Institute of Medicine (IOM). [More]

* OK to provide aid in areas controlled by al Shabaab * Spreading famine may soon engulf all southern Somalia [More]

By Daniel Cressey of Nature magazine Chaperone proteins could be the key to treating a range of diseases, including some cancers. [More]

Flying about 460 meters above the seas off Alaska in 2004 on the hunt for bowhead whales, federal wildlife biologist Charles Monnett and colleagues spotted four white blobs floating in the water. The white blobs were polar bears , which drowned in the open ocean following a powerful Arctic storm.

Help researchers build the go-to platform for documenting all the world's organisms [More]

* Heavy rains likely in Puerto Rico, Dominican Republic * One meteorologist says "uncertainty" over Emily's path [More]