Gulp

Eating is the most pleasurable, gross, necessary, unspeakable biological process we undertake. But very few of us realise what strange wet miracles of science operate inside us after every meal – let alone have pondered the results (of the research). How have physicists made crisps crispier? What do laundry detergent and saliva have in common? Was self-styled ‘nutritional economist’ Horace Fletche...