Scientists Test What the Nose Knows

9:10 minutes

Scientists once estimated that humans could distinguish only 10,000 unique smells, as compared to 7.5 million colors and 340,000 tones. Now a new Rockefeller University study suggests the nose knows much more than we thought. Instead of 10,000 unique odors, try one trillion.

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Andreas Keller

Andreas Keller is a research associate at The Rockefeller University in New York, New York.

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About Annie Minoff

Annie Minoff is Science Friday’s SciArts producer. She’s visited Olympic ski jumps and a nuclear reactor, all in the name of science.

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