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 Nature this week: omic analysis of permafrost microbes, hookworm genome, and more.

Biologists turn to environmental DNA sampling to determine whether elusive or invasive species are shedding DNA in a given area.

Rob Knight writes at Scientific American that microbiome studies are about to break out of the laboratory.

Harold Varmus, the director of the National Cancer Institute, has announced that he is stepping down after nearly five years.