Those herbal supplements that promise to help you sleep or boost your memory often don't contain the herbs they are supposed to, the New York attorney general says.

An investigation conducted by the state attorney general's office used DNA barcoding to examine the contents of 78 bottles of herbal supplements from a dozen Wal-Mart, Target, Walgreens, and GNC stores in New York, the New York Times reports.

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The US National Institutes of Health has developed guidelines to gauge whether frail chimpanzees are healthy enough to be moved to a retirement sanctuary.

Osamu Shimomura, who won the 2008 Nobel Prize in Chemistry for his work on green fluorescent protein, has died.

In PLOS this week: analytical approach for finding new genetic associations, analysis of Streptococcus pyogenes-infecting viruses, and more.

Stat News reports that the head of IBM Watson Health is leaving her post.