91色情片Tim Spector's guide to fermentation is meticulous and persuasive We know fermented foods do us good, but the ZOE founder's new book still surprises with fascinating facts - and avoids feeling like an ad for his gut supplements, says Helen Thomson Culture
EnvironmentVegan cheese could be about to get a lot closer to the real thing A key milk protein for making cheese and yoghurt has been produced in bacteria for the first time, paving the way for better tasting but more sustainable animal-free products News