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Autism cases ARE rising, but why? #science #asapscience #tylenol 3 min 
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Valve's Steam Frame is okay... but I love other things about it 2 min 
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How Do Fossils Form?: Crash Course Geology #18 11 min 
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How old is the Earth?: Crash Course Geology #17 12 min 
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Digging A SECRET GARAGE Part 3 21 min 
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Animals & Shapeshifters: Crash Course Latin American Literature #10 10 min 
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Earthquakes Explained: Crash Course Geology #14 12 min 
Why the US is Struggling to Land on the Moon 20 min 
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SECRET Garage Car Lift Part 1 30 min If you've been on a modern train you won't have noticed that classic "clickety-clack" sound anymore. This is because train tracks are now one continuous piece of rail without gaps. But one long piece of metal without room to expand when hot is dangerous. Thus, engineers had to come up with an ingenious solution involving... jagged rocks?
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