Could an algorithm replace the pill?

Cern scientist Elina Berglund developed an app to monitor her own fertility, with impressive results. Now thousands of women are using Natural Cycles to prevent – and plan – pregnancy
IUDs, implants, condoms and the ever-present pill: for years, contraceptive methods have remained run-of-the-mill while the search for a new alternative that could revolutionise the industry has come up short. Recent headlines have focused on the negative aspects of traditional hormonal birth control: t