This week, The New York Times' Gina Kolata spoke with four women scientists at the top of their fields to get a feel for "their lives as scientists, the joys and struggles of research, and the specific challenges women in science face." Among the four is the University of Washington's Mary-Claire King, who tells the Times she believes that, for female researchers, "the choke point is going from a postdoc to an assistant professorship to a tenure-track position." After that, she says, it's

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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.