Following a recent meeting at Cold Spring Harbor Laboratory, a perspectives piece by a group of researchers appearing it this month's Genes and Development gives a definition for epigenetics, saying that "an epigenetic trait is a stably heritable phenotype resulting from changes in a chromosome without alterations in the DNA sequence." They also postulate that there are three types of signals that work in concert to establish an epigenetic state: the "epigenator" signal from the environment, the "epigenet

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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.