This Week in Science

In this week's Science, a team led by Stanford University researchers reports on a new technique for identifying recent changes in allele frequencies using contemporary genome sequences, which they used to study selected-for traits among the ancestors of modern Britons during the past 2,000 years to 3,000 years. Called the Singleton Density Score, the method was applied to evaluate selection signals in more than 3,000 modern genomes from selected from the British population.

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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.