And that presents quite the neuroscientific mystery: how can each randomly located, odor-detecting cell in the nose manage to send signals to just one specific glomerulus within the olfactory bulb? This feat is akin to, say, 50 friends who are originally separated in random places in a city making their way to the same apartment without initially having the address. Somehow they inherently all know where to go.

— Read more in Mental Landscapes: The Neural Cartography of Smell at Columbia's Zuckerman Institute.