Hormonal contraceptives liberated women around the world, and are now proliferating in Africa too.

Manuela Saragosa talks to endocrinologist Maralyn Druce about how such a tiny pill can have such a transformative effect on our biology and on our societies. And Faustina Fynn-Nyame of the NGO Population Services International explains why an injectable version of the contraceptive is proving to be a hit in Sub-Saharan Africa.

Plus, why is there still no male pill on the market? We ask research head Diana Blithe of the US National Institutes of Health.

Producer: Laurence Knight

(Picture: Woman holding contraceptive pills; Credit: sam74100/Getty Images)