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

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The heart is just a basic two way pump. Why can't we just install two turbines and have a continuous flow of blood?

2510 upvotes

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Post viral cough: why does it get worse after you get better?

2502 upvotes

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Before glasses were invented, how did people cope with being visually impaired? Was it as common back then? If not, why not?

2501 upvotes

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Does any organism grow metal (or similar substances) like we grow hair, teeth, skin, etc.?

2476 upvotes

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What happens to a magnet if i melt it ?

2469 upvotes

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How do color changing animals like the chameleon and certain octopuses know what color to change to?

2450 upvotes

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What was the proposed function of the brain when the heart was long considered as the organ where our consciousness resides in?

2449 upvotes

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When somebody gets some kind of body part transplant they have to take medication to keep their body from rejecting it. Does their body ever acclimate to the transplant, or are these medications a lifelong necessity?

2443 upvotes

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Without self-referencing, is it possible to explain why 1+1=2?

2430 upvotes

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If you receive an organ transplant, will the organ always have the donor's DNA, or does your body eventually replace all of it with cells of your own?

2422 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
The heart is just a basic two way pump. Why can't we just install two turbines and have a continuous flow of blood?	2510
Post viral cough: why does it get worse after you get better?	2502
Before glasses were invented, how did people cope with being visually impaired? Was it as common back then? If not, why not?	2501
Does any organism grow metal (or similar substances) like we grow hair, teeth, skin, etc.?	2476
What happens to a magnet if i melt it ?	2469
How do color changing animals like the chameleon and certain octopuses know what color to change to?	2450
What was the proposed function of the brain when the heart was long considered as the organ where our consciousness resides in?	2449
When somebody gets some kind of body part transplant they have to take medication to keep their body from rejecting it. Does their body ever acclimate to the transplant, or are these medications a lifelong necessity?	2443
Without self-referencing, is it possible to explain why 1+1=2?	2430
If you receive an organ transplant, will the organ always have the donor's DNA, or does your body eventually replace all of it with cells of your own?	2422