/u/Keitiek's posts in /r/askscience

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Why do our bodies float in water when dead? Why does it feel so much harder stay afloat when we are alive?

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Why do we sweat sweat instead of just water?

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Why does our skin darken to protect from the sun? Don't darker colors absorb more light, instead of reflecting it?

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Say we built a giant sphere encasing a black hole. What happens?

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Why don't we frown when we're happy and smile when we're sad?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why do our bodies float in water when dead? Why does it feel so much harder stay afloat when we are alive?	1
Why do we sweat sweat instead of just water?	1
Why does our skin darken to protect from the sun? Don't darker colors absorb more light, instead of reflecting it?	1
Say we built a giant sphere encasing a black hole. What happens?	1
Why don't we frown when we're happy and smile when we're sad?	1