/r/askscience
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Why are there hydrating creams, gels etc for the skin of the face and the body? Doesn't water get to every skin tissue to hydrate it?
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Let's say I put a steel beam 1000 feet in the air above the earth, and this beam goes all the way around the world until it comes back and connects with it's original point, making a perfect circle. Assuming there is no support structure, would this steel beam levitate above the earth?
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