On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
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Mackinac Island, Michigan, has banned cars since 1898!
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Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
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A full-time cashier at Costco makes about $49,000 annually. The average wage at Costco is nearly 20 dollars an hour and 89% of Costco employees are eligible for benefits.
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