/u/[deleted]'s posts in /r/askscience

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With the talk of possible habitable planets, Could the human body withstand a world with twice the amount of gravity?

862 upvotes

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Why do humans have such long hair on our heads (if we left it uncut) when close relatives such as chimps do not? Does it serve some purpose?

849 upvotes

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Why is it that animals can drink from streams and lakes without harm, while humans can get violently ill?

848 upvotes

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If lung cells only last only 6 weeks, how comes if one stop smoking the cancer risk stay above normal for a decade?

841 upvotes

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If I had a pressure cooker that could raise the boiling point of water above 300 degrees F, could I fry food in water?

829 upvotes

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Have humans always had acne?

826 upvotes

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How come scientists can't figure out the exact ingredients and ratios of those ingredients in secret foods and drinks like coca cola?

824 upvotes

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If you were in a coma from ages 9-19, how much would your body grow and mature?

813 upvotes

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Medical community, why aren't you denying crazy people their cigarettes?

810 upvotes

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Which is more efficient, keeping my house at a constant temperature even when I'm gone, or repeatedly cooling and heating it?

807 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
With the talk of possible habitable planets, Could the human body withstand a world with twice the amount of gravity?	862
Why do humans have such long hair on our heads (if we left it uncut) when close relatives such as chimps do not? Does it serve some purpose?	849
Why is it that animals can drink from streams and lakes without harm, while humans can get violently ill?	848
If lung cells only last only 6 weeks, how comes if one stop smoking the cancer risk stay above normal for a decade?	841
If I had a pressure cooker that could raise the boiling point of water above 300 degrees F, could I fry food in water?	829
Have humans always had acne?	826
How come scientists can't figure out the exact ingredients and ratios of those ingredients in secret foods and drinks like coca cola?	824
If you were in a coma from ages 9-19, how much would your body grow and mature?	813
Medical community, why aren't you denying crazy people their cigarettes?	810
Which is more efficient, keeping my house at a constant temperature even when I'm gone, or repeatedly cooling and heating it?	807