January 24, 2013

PEOPLE RECOGNIZE THEIR OWN SCENTS. “You might not be able to pick your fingerprint out of an inky lineup, but your brain knows what you smell like. For the first time, scientists have shown that people recognize their own scent based on their particular combination of major histocompatibility complex (MHC) proteins, molecules similar to those used by animals to choose their mates. The discovery suggests that humans can also exploit the molecules to differentiate between people.”

Richard Feynman used to do party tricks that demonstrated people have much better senses of smell than they think. He wouldn’t have been surprised by this.