National Institute of General Medical Sciences Director Jeremy Berg is stepping down from his post to become associate senior vice chancellor for science strategy and planning in the health sciences at the University of Pittsburgh, according to a National Institutes of Health release. Upon Berg's departure from NIGMS at the end of June 2011, the agency will name an acting director should a search for a new director still be underway.

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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.