Every Drug You Love Was Built to Kill an Insect

Caffeine. Nicotine. Capsaicin. They weren’t made for humans. Plants evolved these chemicals as weapons against insects and other threats — but evolution left us using the same molecular machinery. And then something stranger happened: coffee plants put caffeine into nectar, subtly changing how bees remember flowers and return to them. The plant invented the weapon. We found the reward. #Biology #Science #Evolution #Botany #Caffeine #Nicotine #Plants #Entomology #Neuroscience #scienceexplained