To safeguard against contamination or accidental DNA transfer, particularly in forensic laboratories, Boise State University researchers developed a 120-basepair tag to be used as a way to identify samples. As they report in the Journal of Forensic and Legal Medicine, these nullomer barcodes, made up of DNA sequences that are not found in people, could be added to collection devices so DNA samples are tagged upon collection.

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Vivek Murthy is no longer the surgeon general of the US, the Associated Press reports.

People around the globe took to the streets to support science — some with signs.

Parents who learn of their increased genetic risk of disease also contend with telling their children about theirs, the New York Times writes.

In PLOS this week: loci linked to body mass index measurements, long non-coding RNA expression and urothelial carcinoma prognosis, and more.