Exercise can lead to changes in people's overall health and risk of disease, the New York Times Well blog writes, but the mechanism through which those changes arise are not quite clear. "Several striking new studies, however, provide some clarity by showing that exercise seems able to drastically alter how genes operate," Gretchen Reynolds says in the Times.

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This Week in PLOS

Be Gone

This Week in PLOS

In Nature this week: association between genome-wide homozygosity and traits like height and cognitive ability, improved CRISPR-Cas9 editing, and more.

A survey examines how age, political leanings, and more influence how Americans view certain scientific topics, the Associated Press reports.

A researcher who pleaded guilty to making false statements in research reports has been sentenced to four and a half years in prison and must pay $7.2 million back to the NIH.

The BabySeq project to study the risks and benefits of sequencing newborns is underway.