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

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Why does evolution not weed out morality? What stops psychopaths from outcompeting the rest of us?

1004 upvotes

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Why do my eyelids/general eye area hurt if I haven't slept enough?

366 upvotes

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Is the placebo effect (or the nocebo effect) also observed in non-human animals?

8 upvotes

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Yesterday I donated a pint of blood. How long before it is replenished by my body?

3 upvotes

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In the menstrual cycle, why is the fertile period so short?

1 upvotes

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What is this knot in my chest that appears when I'm getting all emotional?

1 upvotes

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What would happen if you threw a tomato at the sun?

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Why do people dislike rain so much?

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The fastest that information can be sent is light speed. But if you have a massive pole that's, say, a light year long, and you push one end of it, won't the other end move almost instantly? Why/why not?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why does evolution not weed out morality? What stops psychopaths from outcompeting the rest of us?	1004
Why do my eyelids/general eye area hurt if I haven't slept enough?	366
Is the placebo effect (or the nocebo effect) also observed in non-human animals?	8
Yesterday I donated a pint of blood. How long before it is replenished by my body?	3
In the menstrual cycle, why is the fertile period so short?	1
What is this knot in my chest that appears when I'm getting all emotional?	1
What would happen if you threw a tomato at the sun?	1
Why do people dislike rain so much?	1
The fastest that information can be sent is light speed. But if you have a massive pole that's, say, a light year long, and you push one end of it, won't the other end move almost instantly? Why/why not?	1