Improbable Research announced the winners of its 2011 Ig Nobel Prizes during its 21st annual prize ceremony this week. The prizes are meant to celebrate the most unusual kinds of science and research that "first make people laugh then make them think," the organization 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.

In Science this week: intellectual property experts argue patent battles such as the one over CRISPR are wasteful, and more.

Researchers have grown tumors in 3D cell cultures to better understand cancer, the Economist reports.