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BrainStuff
VetenskapNaturvetenskap

What makes us yawn?

5 min•7 maj 2014

Yawning is a universal human behavior, yet scientists still don't know exactly why we do it or what purpose it serves. Marshall Brain explores some of the theories behind yawning in this episode.

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How Did Sundown Towns Say the Quiet Part Out Loud?
•12 min
Why Do We Yawn, and Why Is It Catching?
•12 min
How Do Rip Currents Work?
•9 min
BrainStuff Classics: Can the Same Animal Evolve Twice?
•7 min
Where Did Tomatoes Come From?
•11 min
How Does Aspirin Know Where to Go in Your Body?
•14 min
What Is the Deepest Hole in the World?
•15 min
BrainStuff Classics: Is Canned Food Really Worse Than Fresh or Frozen?
•8 min
How Do Octopuses Work?
•14 min
How Do We Get Iron and Steel Out of Stone?
•12 min

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