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It's Okay to Be Smart
6 Chemical Reactions That Changed History
Season 4
Episode 32
From fire to food, check out these life-altering reactions that surround us everyday.
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10:52
Celebrating 30 years of the Hubble Space Telescope.
12:19
Do the supposed advantages for springing forward and falling back hold up?
8:23
The sunlight we see is tens of thousands of years old. How is that possible?
11:30
I went to NASA in Houston to talk to astronaut Don Pettit.
7:20
Why is ice slippery? It's a more complicated answer than it seems!