This Week in Nature

In Nature this week, a multi-national research team reports on the sequencing and analysis of the elephant shark genome, providing insights into bone formation and the immune systems in jawed vertebrates, also known as gnathostomes. These animals can be divided into those with skeletons of bone or of cartilage.

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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.