One of the developers of the first oral contraceptive pill, Carl Djerassi has said IVF and reproductive science has helped liberate couples from the high proportion of unwanted pregnancies.
Challenged by Stephen Sackur that science had led to the "divorce of sex and reproduction", he rejected the "romanticised" idea that natural conceptions were better, saying the most important issue was that the child was wanted.
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You can watch the full interview on Monday 3rd October on BBC World News at 03:30 GMT, 08:30 GMT, 15:30 GMT and 20:30 GMT.
And on BBC News Channel at 04.30 BST on Monday repeated on Tuesday at 00.30 BST.