This Week in Science

In this week's Science, two independent research groups report data showing that RNAi interference is used by mammals to fend off viral pathogens, as well as to control levels of endogenous genes. In one study, investigators looked at undifferentiated mouse embryonic stem cells, which lack an interferon immune response system, and found an accumulation of RNAi molecules after viral challenge.

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The Chan Zuckerberg Initiative is investing in Cold Spring Harbor Laboratory's BioRxiv.

A study appearing in PLOS One finds that shortened consent forms don't affect clinical trial participants' understanding of the study.

The National Security Agency monitored signal intelligence for signs of "nefarious" genetic engineering projects, Gizmodo reports.

In Nature this week: barley genome sequenced, method for genotyping and phasing short tandem repeats, and more.