This Week in Science

In a paper published online in advance in Science this week, Matthias Fischer and Curtis Suttle at the University of British Columbia in Vancouver report on a virophage that they say "represents an evolutionary link between double-stranded DNA viruses and Maverick/Polinton eukaryotic DNA transposons." They suggest that these transposons "may have originated from ancient realtives of Mavivirus," although they say they have not ruled out "alternative evolutionary scenarios."

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Sometimes genetic tests give inconclusive results and provide little reassurance to patients, the Associated Press reports.

Vox wonders whether gene-editing crops will be viewed similarly as genetically modified organisms of if people will give them a try.

In Science this week: research regulation and reporting requirement reform, and more.

NPR reports that government and private insurers are being slow to cover recently approved CAR-T cell therapies.