At The New York Times Prescriptions blog, Duff Wilson says that outside business deals are keeping the pipelines of the major drug companies healthy, instead of internal research projects. According to a recent analysis from Fitch Ratings, the major drug makers are on pace to meet last year's level of 21 new drugs approved in the United States and Europe, but only thanks to acquisition and licensing deals.

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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.