This Week in Nature

In Nature this week, a team from the Georgia Institute of Technology reported data suggesting that homologous recombination between RNA and DNA may be far more widespread than previously believed, making RNA a key player in genomic stability and plasticity. Generally, homologous recombination involves the exchange of genetic information between similar DNA molecules.

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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.