Evolution in Action

In order to study the evolution of single-celled organisms to multicellularity, researchers at the University of Minnesota in St. Paul set out to force an evolution of unicellular brewer's yeast into multicellularity in their lab, reports New Scientist's Bob Holmes.

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 Senator Lamar Alexander (R-Tenn.), who chairs the Senate health committee, will be retiring at the end of his term, Stat News reports.

UCSF researchers find that having two X chromosomes may contribute to women's longer lifespans, according to Discover's D-brief blog.

The Wall Street Journal reports on the US Centers for Disease Control and Prevention's use of genetic approaches to study foodborne illnesses.

In PNAS this week: immune cell profiling of wild baboons by social status, metabolomics profiling of esophageal tumors, and more.