This Week in Science

In Science Signaling this week, researchers in Germany report on their loss-of-function RNAi screen which revealed Ras- and Raf-independent MEK-ERK signaling in human epithelial cells during Chlamydia trachmatis infection. Their study also identified 59 host factors that either positively or negatively influenceChlamydia replication; depletion of Ras or Raf in HeLa cells increased the pathogen's growth.

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Genetic genealogy has led to an arrest in another cold case, dating back to 1987.

Magdalena Skipper, the incoming editor-in-chief of Nature, speaks with NPR's Weekend Edition Sunday.

In PLOS this week: mutation in second gene widens clinical symptoms of people with ADD3 mutations, comparative genomic analysis of Pseudovibrio, and more.

Wired reports that 23andMe is trying to bolster its outside collaborations.