Is it possible that different microbes in the gut of one species could, over time, lead to the split of that organism into two distinct species.

If microbe-driven speciation is possible then it would make for a novel twist on evolution, and a research team based at Vanderbilt University says that it has happened, in a type of parasitic jewel wasp, Science writes.

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The US Food and Drug Administration has new guidelines that enable some gene and cell therapies to undergo expedited review, according to the New York Times.

Using gene drives to control invasive species might be too risky, an initial advocate of the approach says.

Researchers have grown tumors in 3D cell cultures to better understand cancer, the Economist reports.

In Science this week: intellectual property experts argue patent battles such as the one over CRISPR are wasteful, and more.