/r/askscience
Why is it that animals can drink from streams and lakes without harm, while humans can get violently ill?
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Does cooling the body (ie cold shower, standing in a cooler) burn calories as the body re-heats itself?
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Since stars are constantly fusing their way up the periodic table, is the universe expending a limited supply of lighter elements? Could this outpace entropy/heat death?
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If a human were to have a blood transfusion with a blood type that was not their own, what would happen?
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When dogs of different colors breed their descendants can have patches of either color instead of a mixture. Why does that not happen on humans?
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