The microbial communities in people's mouths are more closely tied to environmental exposures than to genetics, according to a study published online in Genome Research. A University of Colorado, Boulder, team performed 16S ribosomal RNA sequencing on spit samples from more than 100 individuals, each of whom was tested up to three times over the course of a decade. Among the participants were 27 identical- and 18 non-identical twin pairs.

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This Week in Cell

This Week in Cell

Twin Town

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.