Most Cultures Never Kissed for Love. So Why Did We Start?

Dex is sure he's about to pull off the first kiss in human history by the campfire — but Mira has other plans, and the science of kissing turns out to be much older and weirder than either of them expects. From ape ancestors who kissed 17–21 million years ago, to a 2,500 BC clay tablet from Mesopotamia, to a 48,000-year-old Neanderthal mouth microbe, this is the real story behind one strange habit: pressing your mouths together on purpose. Chapters: 0:00 Dex kisses a fish 1:03 Step 1: Apes kissed first 2:01 Theory 1: Mouth-to-mouth dinner 2:46 Theory 2: The sniff 3:41 Theory 3: The kiss test 4:38 The first kiss on clay 6:00 Did Neanderthals kiss? 7:12 Half the world doesn't kiss 8:35 80 million bacteria 9:12 Dex tries everything 9:47 Again. No fish. 10:14 Who was watching? So which theory do you believe — feeding, sniffing, or testing a partner? Tell us in the comments, and subscribe so you don't miss what happens next (Dex really needs to deal with that bad breath). Science notes: The dates for ape kissing (Brindle et al., Oxford, 2025), the Mesopotamian clay tablets (Arbøll & Rasmussen, Science, 2023), the Neanderthal oral microbiome (Weyrich et al., Nature, 2017), the T-shirt smell study (Wedekind, 1995), and the cross-cultural kissing survey (Jankowiak et al., 2015) are all real research. Dex, Mira, the campfire argument, and the cave painting twist are fiction. The story is fiction — the science is real. #whatif #animation #evolution