Shoulders of Others

New inventions often build off of what's already around, altering and combining them in new and interesting ways, writes the Emerging Technology from the arXiv blog at MIT's Technology Review. But whether or not that common wisdom is accurate has been unclear.

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In PNAS this week: ancestry and admixture in Brazilians, characterization of novel double-stranded RNA mycovirus, and more.

Researchers report that what scents someone picks up can reflect their complement of immune genes.

The New York Times examines ethics and China's push to lead biomedical research.

At her blog, Sally Rockey dives into National Institutes of Health funding data.