A kiss has been a signal of special affection across continents and cultures for millennia. But there’s long been debate over how the practice started. Host Carolyn Beeler speaks with professor Adriano Lameira at the University of Warwick in the UK, whose research with apes indicates a strong connection between kissing and primate grooming behavior.
The story you just read is not locked behind a paywall because listeners and readers like you generously support our nonprofit newsroom. Now more than ever, we need your help to support our global reporting work and power the future of The World. Can we count on you?