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It's Okay to Be Smart
How Well Do Masks Work?
Season 8
Episode 16
Wearing a mask is a cheap and easy way to help stop the spread of airborne infections like COVID-19. It’s also a sign that you want to help protect other people and have them protect you… that we’re all in this together. Here’s some awesome slow-motion schlieren imaging experiments to demonstrate why masks work! Share with someone who needs to see this.
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6:56
Air. I bet you never even notice that it’s there.

10:47
Why Are So Many People Allergic To Food?

7:13
This video is all about the difference between mass and weight.

5:51
Are You Afraid of Holes?

9:05
Humans have a hard time with really big numbers, especially when it comes to DEEP TIME.

9:44
If we lived light years from Earth, how would we know there’s life here?

4:59
We explore how and why itching help!

4:53
You know you’ve wondered. Do fish actually pee?

12:42
They say everyone has a doppelgänger, but is that really true?

5:19
Where do you see the Brazil Nut Effect around you?

8:53
What do other life forms have to teach us about staying alive as we get old?

10:16
Eating turkey this holiday season? You’re eating a dinosaur!