This Week in Science

In a report published online in advance in Science this week, University of Cambridge's Eric Miska and his colleagues discuss the roles of piwi-interacting RNAs in Caenorhabditis elegans. "Our data suggest that nematode piRNA clusters are evolving to generate piRNAs against active mobile elements," Miska et al. write. "Thus, piRNAs provide heritable, sequence-specific triggers for RNAi in C. elegans."

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Using DNA to sketch crime victims might not be a great idea, the NYTimes says.

Science has its own problem with sexual harassment. What do we do with the research these abusers produce, Wired asks.

Senate Republicans led by Senator Rand Paul (R-KY) are trying to change how the government funds basic research, reports ScienceInsider.

In Science this week: combining genomics and ecology to better understand the effects of natural selection on evolution, and more.