In the Pipeline points to an editorial from the Rockefeller University Press complaining about the lack of transparency Thomson Scientific uses when calculating journal impact factors. Their complaints range from not being able to get the original data to getting the wrong data when their request was fulfilled. Blogger Derek Lowe just seems amused by the diversity in the nearly 500 chemistry titles. "...have you ever seen anything from Chemical Papers?

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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.