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

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What is the minimum amount of humans needed for the survival of the species?

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By what method do humans generate random numbers?

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Could a spaceship rotate or change its course by shifting its mass instead of using thrusters?

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Is there an evolutionary benefit to humans' complex sexual desires?

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What were the intermediate steps in the evolution of flight?

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Is it possible for a photon to orbit a black hole?

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Why are females always cold?

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Can turbulence destroy a passenger aircraft?

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Why does it seem animals not only suffer less muscular/skeletal injuries (with less warming up, stretching, etc) - but when they do suffer an injury seem to heal up ridiculously fast, without the aid of medical treatment?

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Since the universe is expanding, how do we know if a large portion is not already 'out of sight' and thus put it at a much younger age than it might be?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
What is the minimum amount of humans needed for the survival of the species?	65
By what method do humans generate random numbers?	65
Could a spaceship rotate or change its course by shifting its mass instead of using thrusters?	65
Is there an evolutionary benefit to humans' complex sexual desires?	65
What were the intermediate steps in the evolution of flight?	65
Is it possible for a photon to orbit a black hole?	64
Why are females always cold?	64
Can turbulence destroy a passenger aircraft?	64
Why does it seem animals not only suffer less muscular/skeletal injuries (with less warming up, stretching, etc) - but when they do suffer an injury seem to heal up ridiculously fast, without the aid of medical treatment?	64
Since the universe is expanding, how do we know if a large portion is not already 'out of sight' and thus put it at a much younger age than it might be?	64