/r/askscience

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Is it possible to overdose testosterone? What will happen then?

811 upvotes • eightcoffee

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Why do teeth tend to revert towards their old alignment once you stop wearing braces?

811 upvotes • portmantoux

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How come no matter how realistic a computer generated face is, we know it's not real?

811 upvotes • PotatoPotahto

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Do amputees maintain the same volume of blood they had before they became amputees?

810 upvotes • Dvout_agnostic

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Regarding altered brain chemistry in depression: Does the altered brain chemistry alone cause the depression or does depression itself alter the brain chemistry?

810 upvotes • deterra

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If a person is allergic to cats, what are the chances that this person will also be allergic to other cat species, such as lions, leopards, tigers etc.?

810 upvotes • Chrythes

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Swallows can fly at great heights to feed on insects, but why do the insects themselves fly so high, and what do they feed on?

810 upvotes • happy_otter

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

810 upvotes • [deleted]

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Why don't refineries reclaim their flare's energy to heat water or the distillation stack?

810 upvotes • sl600rt

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AskScience AMA Series: Emergency Medicine

809 upvotes • Teedy

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Is it possible to overdose testosterone? What will happen then?	811	eightcoffee
Why do teeth tend to revert towards their old alignment once you stop wearing braces?	811	portmantoux
How come no matter how realistic a computer generated face is, we know it's not real?	811	PotatoPotahto
Do amputees maintain the same volume of blood they had before they became amputees?	810	Dvout_agnostic
Regarding altered brain chemistry in depression: Does the altered brain chemistry alone cause the depression or does depression itself alter the brain chemistry?	810	deterra
If a person is allergic to cats, what are the chances that this person will also be allergic to other cat species, such as lions, leopards, tigers etc.?	810	Chrythes
Swallows can fly at great heights to feed on insects, but why do the insects themselves fly so high, and what do they feed on?	810	happy_otter
Medical community, why aren't you denying crazy people their cigarettes?	810	[deleted]
Why don't refineries reclaim their flare's energy to heat water or the distillation stack?	810	sl600rt
AskScience AMA Series: Emergency Medicine	809	Teedy