Just how Ötzi, the Tyrolean Iceman who died more than 5,300, met his demise isn't quite clear. His well-preserved body shows evidence of both an arrow wound to the shoulder and, more recently discovered, a blow to the head.
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The San Diego Union Tribune wonders whether Medicare is ready for personalized medicine.
Jun Wang, the chief executive of BGI, has stepped down.
In PNAS this week: human T cell editing with CRISPR, retrotransposons acting as insulators, and more.
The New York Times' George Johnson muses on cancer's roots in multicellularity.