Cheap DNA testing kits have enabled millions to peek into their family history, ancestry and inherited health conditions. But the technology has also raised ethical concerns over how customers’ data is being shared and sold for use in drug research and law enforcement.

It’s also upending the decades-old industry of anonymous sperm donations.

We met Anna, who found her biological father - a sperm donor - along with 40 half-siblings after taking a DNA test. Her story raises the question: how do you protect someone’s anonymity in the age of affordable and easy online DNA tests?

0:00 Introduction
1:52 The history of sperm donations
3:50 Anna's story
4:55 The rise and rise of DNA tests
5:57 Can we keep our DNA anonymous?
8:32 Meeting your 'family'

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We make short documentaries, explainers and original series for people who care about the world’s biggest challenges. Context is anchored around three of the most significant and interdependent issues of our time: climate change, the impact of technology on society and inclusive economies. We contextualize how critical issues and events affect ordinary people, society and the environment.

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