LifeEvolution's big bang: How life on Earth took off Life was single-celled and boring for billions of years, then BOOM! the ancestors of most animals alive today appeared – thanks to a perfect storm of events Features
HealthNot just obesity – faecal transplants' weird effects From reversing alopecia to easing depression, a dose of someone else's faeces seems to have unexpected effects – but could it also pass on chronic illness? News