/u/CitizenPremier's posts in /r/askscience
Does a black hole's event horizon begin to decrease proportionally to its mass at a certain point? Or does it always get bigger with more mass?
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What determines how hot a furnace can get? In other words, why can't I keep burning coal and make a furnace (or something in it) reach infinite temperatures? Why is there a cap?
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There seem to be quite a lot of positive feedback loops with Global Warming, so why hasn't it happened in the past? What kept our Earth cool before?
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Does fire reflect light, an if so, what color is it? In other words, what color would fire be if it didn't emit light?
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How much radiation were people in Japan exposed to, and how has that effected their estimated longevity? Could it be compared to a cigarette habit for easy comprehension?
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