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It's Okay to Be Smart
Illuminating the Universe: The History of Light
Season 5
Episode 9
Beyond what we can touch, taste, smell, and hear, we experience the universe through light. But how did we come to discover light, and how did we learn light’s true nature, as the fastest thing in the universe, an electromagnetic spectrum, a wave and particle capable of the most amazing things? Here is the history of light, according to physics.
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5:54
A brief history of time…

8:06
What *is* a species anyway? And how do you know if you’ve found a new species?

5:35
Nuclear weapons represent the darker side of E=mc^2.

5:23
Join the #AnythingButPepper movement!

5:03
Vision impairment is common in humans, so why not the rest of the animal kingdom?

5:45
Mosquitos have been dangerous for, well... forever. So what's new about Zika?

4:41
Spit is critical for our health. Actually.

6:32
A song of ants and fire
and ant-decapitating flies.

6:25
Video games are still on the rise. Can you take the heat?

7:18
From fire to food, check out these life-altering reactions that surround us everyday.

3:27
The lingerling radiation from the ancient universe still surrounds us to this day.

6:13
The amazing legacy of animal cells.