This Week in PNAS

In the early, online version of the Proceedings of the National Academy of Sciences, a group from Germany and the US looks at whether post-traumatic stress disorder stemming from childhood events coincides with distinct gene expression and epigenetic profiles in individuals' blood samples.

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In PNAS this week: rare variants linked to bleeding disorder, comparison of whole-exome and whole-genome sequencing, and more.

George Church tells The Sunday Times that his group has inserted some woolly mammoth genes into elephant cells.

A Scientific Reports editor resigns over a new policy at the journal allowing researchers to pay to fast track the peer review of their manuscripts, and poll.

The National Cancer Institute's Harold Varmus discusses the state of cancer research with the New York Times.