DNA-testing company 23andMe has signed a $300 million deal with a drug giant

A $300 million deal between 23andMe and the pharmaceutical giant GlaxoSmithKline is the latest example. If that has you thinking about how these companies use your data, here's how to delete it.

A $300 million deal between 23andMe and the pharmaceutical giant GlaxoSmithKline is the latest example. If that has you thinking about how these companies use your data, here's how to delete it.