Researchers funded by the US National Science Foundation whose projects are under investigation by the chair of the House science committee tell the Chronicle of Higher Education's Paul Baskin that it's a "witch hunt."

"It saddens me that elected officials are attacking science in this way," says University at Albany anthropologist Robert Rosenswig, who studies Mexican history with his NSF grant.

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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.