If cooking, at least of starches, can alter the ecology of the gut, then have humans been shaping our microbiomes ever since we learned to put prehistoric tubers in the fire?

It was a challenge unlike any other the chef-turned-graduate student had faced: Vayu Maini Rekdal had to create a menu in which every ingredient could(...)

US Democratic presidential nominee Hillary Clinton debates with Republican presidential candidate Donald Trump during the third US presidential debate in Las Vegas. Photograph:  Ethan Miller/Getty Images

Republican candidate Donald Trump declined to say whether he would accept the result of the US presidential election if he lost, raising doubts about(...)