Richard Axel

The identification of a population of olfactory sensory neurons innervating a single glomerulus that mediates robust avoidance to a naturally occurring odorant provides insight in the neural circuitry that underlies this innate behavior.

In humans, smell is often viewed as an aesthetic sense, as a sense capable of eliciting enduring thoughts and memories. Smell, however, is the primal sense. It is the sense that affords most organisms the ability to detect food, predators, and mates.

There are many ways for organisms to probe the external world. Some smell it, others listen to it, many see it. Each species, therefore, lives in its own unique sensory world of which other species may be partially or totally unaware.

Our brains are wired such that it's difficult to take action until we feel at least some level of this emotional state. In fact, performance peaks under the heightened activation that comes with moderate levels of stress. As long as the stress isn't prolonged, it's harmless.

Every time you log in to Facebook, every time you click on your News Feed, every time you Like a photo, every time you send anything via Messenger, you add another data point to the galaxy they already have regarding you and your behavior.