/r/askscience
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How much electricity would be created per day if every Walmart and Home Depot in America covered their roof with solar panels?
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If a piano, a violin and someone's voice can each reach the same frequency (note), what is it about the sound they make that allows you to differentiate them?
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If I mix red and blue paint, do the two colours ever truly become one? Or if I zoom in close enough, will I always see distinct red and blue particles?
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If an addict stops using an addictive substance, does their brain's dopamine production eventually return to a normal level, or is sobriety just learning to be satisfied with lower dopamine levels?
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AskScience AMA Series: We're Chris Joyce, a science correspondent for NPR, and Rebecca Davis, a senior producer with NPR's science desk. Ask us anything about plastic pollution!
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Are pacemakers able to adjust their "heart rate" based on the exertion of the person they belong to? Do they support a feedback system with the body?
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