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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Under a proposed spending bill, the US National Institutes of Health would see an additional $3 billion in funding.

Researchers from the University of Oxford and the University of Sydney sequenced numerous platypus genomes to study their population history.

Robert Redfield, the new pick to lead the US Centers for Disease Control and Prevention, has faced criticism for some of his work.

In Nature this week: sequenced genomes of five additional Neanderthals, and more.