Among policymakers and business leaders, little attention appears to have been paid to one of the fastest-growing demographics; women who are choosing not to have children. Annette Young talks to Dr Caroline Magennis who's written a manifesto for childfree women. Also Claudia Sheinbaum becomes Mexico's first-ever female president. But the scientist and former Mexico City mayor is facing a host of challenges as the country reels from spiralling violence with drug cartels battling for influence. Plus we meet a rare breed. The French women deep sea divers who are plunging to new depths and breaking barriers as a result.