In a new study published in Cell, researchers at Cornell University report that RNA can be methylated just like DNA, says New Scientist's Andy Coghlan. Senior author Samie Jaffrey and his team found that around 20 percent of all RNA produced in rat brain cells and human kidney cells have methylated adenosine, Coghlan says.

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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.