In the second episode of the series, Liz follows two couples undertaking IVF and looks at the new research that may dramatically increase success rates. Jem attempts to become the first man to go 360 degrees on a playground swing. And Dr Yan confuses shoppers with the help of a very special mirror.
Investigating the science behind the headlines and making sense of the everyday issues that matter to us all.
The programme is co-produced with the Open University. www.bbc.co.uk/bang