Why Don’t Sharks Have Bones?

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Aug 142014
 

In honor of Shark Week…

Enjoy!

SciShow host Hank Green celebrates Shark Week with a quick tour of the shark’s fascinating anatomy. Green goes into great detail as he explains how sharks are made up of cartilage instead of bone, which makes them lighter and more flexible.

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Migraines: Not Just Another Headache

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Aug 032014
 

Hank Green of SciShow explains the biology, symptoms and how to treat a migraine.

If you’ve never had a migraine, you might think it’s just a really bad headache. But if you’ve ever had them, or you know someone who does, you know that they’re much worse — and much more complicated — than that. Hank explains the biology behind this disorder of the central nervous system, and how it can be treated.