This Week in PLOS

In PLOS One, researchers from India use shotgun metagenomic sequencing to look at the microbes found on paper currency in that country. By sequencing DNA from bills deemed most and least circulated from Reserve Bank of India data, the team detected sequences coinciding with dozens of antibiotic resistance genes, as well as sequences believed to represent pathogenic and cellulose degrading organisms.

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While gene therapies may have high price tags, they could be cheaper than the cost of managing disease, according to MIT's Technology Review.

Researchers are looking for markers that indicate which cancer patients may respond to immunotherapies, the Associated Press writes.

In Nature this week: paternal age associated with de novo mutations in children, and more.

Nature News writes that researchers are still wrangling over the role of the p-value.