Topic: nervous system

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Oxygen’s surprisingly complex journey through your body

Oxygen forms about 21% of the air around us. In your body, oxygen forms a vital role in the production of energy in most cells. But if gases can only efficiently diffuse across tiny distances, how does oxygen reach th...

How To Stop Yourself Being Ticklish – with Dr Emily Grossman

Why do we feel ticklish? Why does it make us laugh? It’s hard to pin down a scientific definition – or explanation – of tickling. It’s a complex phenomenon, involving a range of sensory and neurological elements, whic...

How the Octopus Moves – ScienceTake

How do you move from here to there when you have eight long, flexible legs that radiate out from your head? After analyzing recordings of how an octopus moves, three Israeli researchers have determined something prett...

Summertime Science: Sunburn, Sweat, and Wrinkly Fingers

Why do we sweat? Why do our fingers wrinkle in water? Why do we get sunburns? Joe Hanson explains it all in this summer science episode of It's Okay to Be Smart. Bonus: find out what those SPF numbers mean on your sun...

Paralyzed Woman Controls Robotic Arm With Thoughts

When Cathy Hutchinson controlled a robotic arm using a small sensor planted in her brain, it was a remarkable breakthrough in neurobiology and computer science. The sensor would recognize patterns or signals from her ...

Schoolhouse Rock: Telegraph Line (Nervous System)

We aren’t using the telegraph as a metaphor anymore, but why aren’t we still teaching our kids about the central nervous system, peripheral nerves, the autonomic system in cartoons? Don’t our brains...