This Week in Nature

In this week's Nature Genetics, a multi-national team of investigators reports on the results of a genome-wide association scan focusing on human blood metabolism. Comprising more than 7,800 adults from two European population studies, the effort revealed genome-wide significant associations at 145 metabolic loci and their biochemical connectivity with more than 400 metabolites in human blood.

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Senator Elizabeth Warren (D-Mass.) has released the results of a genetic ancestry analysis, the Boston Globe reports.

Retraction Watch's Ivan Oransky and Adam Marcus report that Harvard Medical School and Brigham and Women's Hospital have recommended that more than 30 papers from a former researcher be retracted.

Thomas Steitz, who won the 2009 chemistry Nobel Prize for his ribosome work, has died, the Washington Post reports.

In PLOS this week: mechanisms for genes implicated in coronary artery disease, rumen microbes and host genetics influence cow methane production, and more.