The science series returns with a look at the future of in vitro fertilisation. It is 21 years since the first test-tube baby was born, and developments should, over the next few years, make the technique easier and more reliable. There's also a look at a robotic firefighter that can withstand temperatures of 800 degrees Celsius. Presented by Peter Snow and Philippa Forrester, with Jez Nelson, Craig Doyle and Anya Sitaram.
Producer Paul Bradshaw; Editor Saul Nasse
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