Some 11 percent of the cell culture-based projects housed in the NCBI Sequence Read Archive appear to be contaminated with mycoplasma, Anthony Olarerin-George and John Hogenesch from the University of Pennsylvania report.

Mycoplasma is often introduced accidentally into cell cultures by lab workers, and it cannot be killed by the antibiotics typically used to treat such cultures.

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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.