Canadian toxicologists have published a study in PNAS linking exposure to particulate air pollution to increased mutation and methylation in the DNA of mice sperm cells. They found that mice breathing ambient air next to steel mills and a major highway had increased frequencuy of mutation and increased methylation in sperm DNA as compared to mice breathing filtered air.

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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.