Technique taking DNA from mum, dad and a second women donor given the go-ahead in UK. But how does it work?
Catholics should not feel they have to breed "like rabbits" because of the Church's ban on contraception, Pope Francis says.
"Is that your baby?" asked the man on the subway. She is my daughter. I gave birth to her. I breastfeed her. But she doesn't have any of my genes.
If you're trying to get pregnant there are some lifestyle choices that could improve your odds.