Test-tube baby pioneer Professor Sir Robert Edwards dies aged 87

The IVF pioneer Professor Sir Robert Edwards has died aged 87 after a long illness.Sir Robert, who won the Nobel prize for medicine in 2010, started work on fertilisation in the 1950s, and the first so-called test tube baby, Louise Brown, was born in 1978 as a result of his landmark research. 

Since then, five million IVF babies have been born worldwide.Sir Robert co-founded the world's first IVF clinic, Bourn Hall, with obstetrician and gynaecologist Patrick Steptoe in his home town of Cambridge in 1980.