Lab-Grown Sperm Technique for Infertility

Airstrikes on Tehran earlier this year emitted a plume containing almost 30,000 tonnes of sulphur dioxide that reached Asian countries

Men who do not produce sperm can’t be helped by existing fertility treatments, but a start-up is now claiming it can grow their sperm in the lab. Columnist Michael Le Page suspects this technique will have to be combined with gene editing if it is to help many men