This Week in Nature

In Nature this week, a team of UK researchers reports on the identification of new factors that regulate the production of human eggs during meiosis. To overcome technical challenges that have limited previous attempts to screen for mammalian meiotic genes, the investigators developed a new RNAi-based method that allows the assessment of the effects of blocking protein expression in nearly 800 preselected genes mediating the cell division process.

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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.