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While small doses of caffeine (such as drinking a single cup of coffee) can increase alertness and have other positive effects, doses in excess of 200mg (such as drinking multiple cups of coffee at a time or taking caffeine pills) can cause increased anxiety along with nervousness, jitteriness, and an upset stomach.

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NASA’s Vehicle Assembly Building is so enormous that it requires at least 10,000 tons of air conditioning equipment and 125 rooftop ventilators to keep clouds from forming inside the building.

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