Video of the week: The first IVF baby visits the Science Museum

Louise Brown was a miracle baby like no other - the first baby born using IVF. She was born on 25 July 1978, having been conceived using a technique devised by British researchers Robert Edwards, Patrick Steptoe and Jean Purdy. 40 years after her birth, and 6 million IVF babies later, this technology continues to bring hope and happiness to many couples.