/r/askscience

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How is it known that everyone with blue eyes has one single ancestor, rather than this mutation occurring in multiple individuals at many different times?

9161 upvotes • crossdtherubicon

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Why does putting a leaf between pages of a firmly closed book prevent the leaf from decaying?

9159 upvotes • Eudonidano

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Sometimes websites deny a password change because the new password is "similar" to the old one, How do they know that, if all they got is a hash that should be completely different if even 1 character was changed?

9154 upvotes • Random-Noise

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Why do some birds hop while some of them walk?

9137 upvotes • wcmj

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When did pee and poo got separated?

9126 upvotes • Revoot

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Is the Delta variant a result of COVID evolving against the vaccine or would we still have the Delta variant if we never created the vaccine?

9120 upvotes • FidelacchiusSaber

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When an animal is eaten whole, how does it actually die? Suffocation? Digestive acid?

9111 upvotes • fivedogit

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Why do flames take a clearly defined form, rather than fire just being a glow of incandescent radiation?

9109 upvotes • graaahh

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How did viruses come to exist in the first place? How likely is it that they would exist on other planets with forms of life?

9108 upvotes • MasterVelocity

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Do tall people have larger internal organs? If not, how do their bodies fill the extra space?

9081 upvotes • b1ak3

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
How is it known that everyone with blue eyes has one single ancestor, rather than this mutation occurring in multiple individuals at many different times?	9161	crossdtherubicon
Why does putting a leaf between pages of a firmly closed book prevent the leaf from decaying?	9159	Eudonidano
Sometimes websites deny a password change because the new password is "similar" to the old one, How do they know that, if all they got is a hash that should be completely different if even 1 character was changed?	9154	Random-Noise
Why do some birds hop while some of them walk?	9137	wcmj
When did pee and poo got separated?	9126	Revoot
Is the Delta variant a result of COVID evolving against the vaccine or would we still have the Delta variant if we never created the vaccine?	9120	FidelacchiusSaber
When an animal is eaten whole, how does it actually die? Suffocation? Digestive acid?	9111	fivedogit
Why do flames take a clearly defined form, rather than fire just being a glow of incandescent radiation?	9109	graaahh
How did viruses come to exist in the first place? How likely is it that they would exist on other planets with forms of life?	9108	MasterVelocity
Do tall people have larger internal organs? If not, how do their bodies fill the extra space?	9081	b1ak3