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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National Geographic reports that marine mammals have lost a gene that could make them more susceptible to organophosphate damage.
NPR reports on Human Cell Atlas Consortium's effort to catalog all the different cell types within the human body.
The Union of Concerned Scientists surveyed US government scientists about Trump Administration policies and more, Science reports.
In PNAS this week: history and genetic diversity of the scarlet macaw, approach for predicting human flu virus evolution, and more.