Passengers on the Beijing subway can pay with plastic bottles.
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Sudbury Valley School allows students to do whatever they want; no curriculum, tests, homework, or even classes unless requested. 82% of students get accepted to college, as opposed to the 63% national public school average.
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Linen can absorb up to 20 times its weight in moisture before it feels damp!
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The yin-yang pattern's earliest use is in Rome - not China!
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A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
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