Brayson Thibodeaux's parents and grandparents suspected there was something wrong with the 15-month-old boy as he wasn't yet walking, and as Scientific American Mind reports, that suspicion led them to a genetic test that revealed that fragile X syndrome had been affecting the family for generations, though in different ways.

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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.