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It's Okay to Be Smart
Why Do We Cry?
Season 6
Episode 20
Why do we cry? It’s weird. Humans leak water out of their faces when they get sad. Are we the only animals that do this? What does it mean? What is it for? Here’s the science of human tears!
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12:05
There are parts of you that are living and dying at the same time. We find out how much.
12:27
This episode is about the science and evolutionary history of...butts.
12:38
This could have devastating effects on our future.
11:57
We dug a classic doc that tells the story of the transcontinental burrito hypertunnel.
19:29
We explore all the questions that teach us what's possible in evolution!
14:49
We use lots and lots of mousetraps and ping-pong balls to show how this works.
16:43
Explore why we lie if we’re supposed to be the most socially developed species on Earth?