2min chapter

TED Radio Hour cover image

Listen Again: Breathe

TED Radio Hour

CHAPTER

We Wet My Nose, Swap Smell Duty Every Three Hours

We have two eyes and we have two ears to perceive ambiently. But why do you think we have two nostrils? I'll explain why. There's a constant, fast air flow in one of your nostril and a slow one in the other because some molecules are only detectable in slow or fast air flows. So in order to perceive everything, you have to use both nostrils to smell three dimensionally. And here he comes. Every three hours, dis changes your nostrils. Take shifts. We wet my nostrils, swap smelling duties every threeou this is so fabulous. Ido, i have coffee. Hangon, ready? So you close one nostril, it...

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