This Week in Nature

In this week's Nature, two separate research teams publish studies characterizing the genomics of childhood cancers. In the first study, a multi-institute group presents a comprehensive analysis of genetic alterations in 961 tumors from young people with 24 distinct molecular types of cancer, uncovering mutations in genes involved in double-stranded DNA break repair across all cancers.

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 Senator Lamar Alexander (R-Tenn.), who chairs the Senate health committee, will be retiring at the end of his term, Stat News reports.

UCSF researchers find that having two X chromosomes may contribute to women's longer lifespans, according to Discover's D-brief blog.

The Wall Street Journal reports on the US Centers for Disease Control and Prevention's use of genetic approaches to study foodborne illnesses.

In PNAS this week: immune cell profiling of wild baboons by social status, metabolomics profiling of esophageal tumors, and more.