NPR (Emily Kwong) - Why do humans kiss? Sun Feb 15 15:55:16 2026 Matilda Brindle, an evolutionary biologist at the University of Oxford, explains. Channelt.me/News_Wire2 Sourcehttps://www.npr.org/2026/02/15/nx-s1-5713528/why-do-humans-kiss Keywordsnprsciencebiologyevolutionary-biologyoxford-universitymatilda-brindleemily-kwonghuman-behaviorkissingnatureanthropologyresearch