This Week in Nature

By searching through eukaryotic genome sequences for proteins with conservation or divergence patterns similar to those of known small RNA proteins, Harvard University's Gary Ruvkun and his colleagues were able to uncover new small RNA pathway proteins involved in silencing, as they report in an article published online in Nature this week.

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In Science this week: swapping yeast genes with human orthologs to study conservation of function, and more.

Hong Kong is using DNA phenotyping to shame litterers.

A study appearing in Cell suggests some metastatic castration-resistant prostate cancer patients could benefit from PARP inhibitor therapy.

NIH's Francis Collins writes that scientific advances are poised to help populations all over the world, but more scientists are needed to keep the momentum.