Rochester, Minn., has an ambitious plan to transform itself into a biotech and medical hub, the Verge reports. Already, the city of 110,000 people hosts some 1.3 million visitors from across the US and the world each year, often as they seek treatment at the Mayo Clinic there.

The global medical tourism market is worth some $100 billion and has been estimated to be growing at a 35 percent yearly rate, the Verge adds.

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Direct-to-consumer genetic testing companies have offered to test families separated at the southern US border, but that raises ethical issues.

The New York Times reports on a project to develop a tree DNA database to uncover illegal logging.

CNBC reports that confirming a positive result from 23andMe's BRCA health report can be expensive.

In PLOS this week: links between gut microbiome and colorectal cancer mutations, targeted sequencing uncovers genetic susceptibilities to epilepsy in Koreans, and more.