
Secrets in our DNA Preview
Preview: Season 48 Episode 1 | 27sVideo has Closed Captions
What can DNA testing companies reveal about our ancestry and health, and at what risk?
Some 30 million Americans have sent their DNA to be analyzed by companies like 23andMe and AncestryDNA. But what happens once the sample is in the hands of testing companies, and how accurate are their results? NOVA explores the power of genetic data to reveal family connections, ancestry, and health risks—and even solve criminal cold cases.
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Problems with Closed Captions? Closed Captioning Feedback
National Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.

Secrets in our DNA Preview
Preview: Season 48 Episode 1 | 27sVideo has Closed Captions
Some 30 million Americans have sent their DNA to be analyzed by companies like 23andMe and AncestryDNA. But what happens once the sample is in the hands of testing companies, and how accurate are their results? NOVA explores the power of genetic data to reveal family connections, ancestry, and health risks—and even solve criminal cold cases.
Problems with Closed Captions? Closed Captioning Feedback
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NOVA Labs
NOVA Labs is a free digital platform that engages teens and lifelong learners in games and interactives that foster authentic scientific exploration. Participants take part in real-world investigations by visualizing, analyzing, and playing with the same data that scientists use.Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipHalf Sisters Unite Thanks to DNA Testing
Video has Closed Captions
In 2018, June Smith takes a consumer DNA test, hoping to solve a longstanding mystery. (4m 19s)
How—and why—DNA Testing Uses Biased Reference Databases
Video has Closed Captions
Are DNA ancestry tests equally accurate for all test takers? (5m 20s)
Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipNational Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.