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Do Astronauts Need Sunscreen?
Season 5
Episode 39
How do astronauts survive the deadly radiation of deep space? NASA is still figuring out how to protect astronauts from cosmic radiation -- like plastic shielding and magnetic deflectors.
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4:39
What makes kimchi sour and spicy, yet also surprisingly rich and buttery?
3:53
Flame-retardant chemicals can slow the spread of fire in homes and garments.
4:11
Fish living in the oceans around Antarctica seem like they should freeze to death.
4:30
Throwing rice at weddings won't hurt birds--and we can prove it with chemistry.
4:10
How Much Tea Would it Take to Turn the Boston Harbor into Tea?
4:46
It’s a much-loved, protein-packed Japanese food standby made of slimy, stinky soybeans.