Your best baby

Genetic testing start ups are a booming industry in America. Behind the headlines of 'designer babies' are companies tapping into disputed science, facing accusations that this is a pathway to eugenics. So what does the story of one company in particular tell us about this new field of fertility and science?

Reporters: Madeleine Parr and Matt Russell

Producers: Madeleine Parr and Matt Russell

Additional production: Gary Marshall

Artwork: Blythe Walker Sibthorp

Sound design: Dominic Delargy

Editor: Jasper Corbett

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