5 hours agoShareSaveVictoria GillScience correspondent, BBC NewsShareSaveGettyWhile this study pinpointed when kissing evolved it was not able to answer the question of why. There are already a number of theories – that it arose from grooming behaviour in our ape ancestors or that it might provide an intimate way to assess the health and even the compatibility of a partner. Dr Brindle hopes that this will open a door to answering that question. “It’s important for us to understand that this is something we share with our non-human relatives,” she said.”We should be studying this behaviour, not just dismissing it as silly because it has romantic connotations in humans.”
