This Week in PNAS

In PNAS this week, researchers in New York, Massachusetts, and California collaborated to show how the polyamine pathway contributes to the pathogenesis of Parkinson's disease. The team started by using fMRI to identify regions of the brain stem resistant to the disease and then profiled gene expression levels from postmortem brain regions and identified a decrease in the catabolic polyamine enzyme spermidine/spermine N1-acetyltransferase 1, related to the disease.

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At his FDA Law Blog, Jeffrey Gibbs discusses FDA's technical assistance for the draft Diagnostic Accuracy and Innovation Act.

The New York Times reports that genetic testing has uncovered unfaithful penguins at a Utah aquarium.

Cancer researcher loses funding under new Wellcome Trust anti-bullying policies, the Guardian reports.

In Science this week: International Wheat Genome Sequencing Consortium publishes the bread wheat cultivar Chinese Spring reference genome, and more.