/u/N8CCRG's posts in /r/askscience
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At what rate does my brain consume energy (calories)? How much does that fluctuate if I'm doing something like math or reading a book or some other mental activity?
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Would human visitors to Mars have to use a completely sealed space suit, or could they survive with something like what mountain climbers or SCUBA divers use?
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If a supernova were to happen "nearby", would it kill life on the entire earth, or just the half facing it?
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With the amount of CO2 in the atmosphere higher than it's been in a really long time, does this mean that treelines could potentially reach higher up on mountainsides than they used to? If so, how much higher given our current changes compared to, say, 1000 years ago?
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