BrainStuff Classics: Why Are the Oceans Salty...

Your heart needs blood as much as any other muscle in your body, and it receives it the same way -- just a little earlier than anyone else. Learn how the coronary arteries work (and what can go wrong when they don't) in this episode of BrainStuff, based on this article: https://h ...  Show more

Butterfly wings often come in striking, iridescent colors -- but it's not from pigments (or not entirely). Learn how microscopic structures give butterfly wings their flash in today's episode of BrainStuff, based on this article: https://animals.howstuffworks.com/insects/butterfl ...  Show more

Whether you draw your wisdom from 18th century poems or experience in the surf, you probably know that drinking seawater is a terrible idea. But exactly why shouldn’t you drink saltwater? What happens if you do? Can it really drive you mad with hallucinations? In this episode ...

Young Earth was hot and dry. Where did the oceans come from?

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Dive into a salty adventure with "English for Kids"! In this exciting episode, we're joined by Dr. Marina, a marine biologist, to explore the intriguing question: Why is the sea salty? From the journey of minerals from rocks to our vast oceans, to the crucial role salt plays in m ...  Show more

Sonar uses sound to gauge the distance between objects. Although most people associate sonar with submarines, humans use sonar for a lot more than underwater navigation. In this episode, Jonathan and Chris take a look at the mechanics behind sonar.