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Things You Thought You Knew - Earth’s Spinning Core
StarTalk Radio
Tire Pressure - What You Thought You Knew
Neil deGrasse Tyson: Tire pressure is the weight of a column of air from Earth's surface all the way up to the edge of the atmosphere. He explains why suction cups don't suck, and how they can be used to pull things like bicycles' wheels off the ground. And he talks about his new book "The Next Generation," out this month.
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