Tianle Li, a former chemist at Bristol-Myers Squibb, has been sentenced to life imprisonment for poisoning her husband, Xiaoye Wang, the Associated Press reports.

Li was convicted of murder and hindering apprehension in July. The prosecution argued that she ordered the poison thallium, which is tasteless, odorless, difficult to detect, and fatal in small amounts, through work, the AP says.

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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.