This Week in Nature

In Nature this week, researchers from the Dana-Farber Cancer Institute report animal data showing that small subgroups of tumor cells can drive proliferation of surrounding cancer cells. While it has long been known that tumors consist of different populations of cancerous cells with substantial genetic heterogeneity, just how this affects disease progression has been unclear.

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The UK's Human Fertility and Embryology Authority calls for consumer genetic testing companies to warn customers that testing could uncover family secrets, according to the Guardian.

The New York Times reports that United Nations delegates have been discussing how to govern the genetic resources of the deep sea.

Researchers have transplanted edited cells into mice that appear to combat cocaine addiction, New Scientist reports.

In PNAS this week: analysis of proteolytic enzymes secreted by circulating tumor cells, phylogenetic study of Fv1 evolution, and more.