A New Tree

Armed with gene sequences, researchers led by the University of California, Berkeley's Jillian Banfield have drawn an expanded tree of life, marked by an abundance of bacteria.

"It is a momentous discovery — an entire continent of life-forms," Eugene Koonin from the National Center for Biotechnology Information, who was not involved in the study, tells the New York Times.

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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.

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

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