More and more people don't want children. Comedian and poet Kate Fox is one of the rising child-free. Are they set to save the planet or condemn it to extinction? Could you think of better uses for the £212,000 average cost of raising one? Kate Fox rejoices in a world where the unmaternal now have more options than becoming a nun or a witch, in this talk based on her recent Radio 4 show The Price of Happiness. 'Funny and endearing with a journalistic cynicism that cuts through the whimsy' **** (Sunday Telegraph).