/u/wreak_havok's posts in /r/askscience
How far back in time could a person hypothetically go and still be able to breathe the Earth's air without issue?
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I've recently been hearing lots about Global Cooling... My mind is still not made up on Global Warming. Can you enlighten me?
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What would happen if something lost all gravitational attraction to the universe? Would the universe fly past it?
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