This Week in Nature

In this week's Nature, two separate research groups report on the evolution and function of the Y chromosome in male mammals. In one paper, a team from the University of Lausanne and elsewhere describe the use of a novel sequencing technique to examine Y evolution across 15 mammals, showing the origins of the chromosome in placental and marsupial mammals, which emerged just before the split of these lineages around 180 million years ago.

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Researchers describe a way to share data while keeping it secure, Agence France Presse reports.

In Science this week: genetic mutations typically associated with esophageal cancer are common in older, healthy individuals, and more.

India's Council of Scientific and Industrial Research has a new director-general, according to ScienceInsider.

A new study links more than a hundred genes to autism spectrum disorder, Discover's D-brief blog reports.