/r/askscience

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Was there ever a time in the history of the earth where if an intelligent civilization had arisen and self-destructed, we would now see no evidence in the fossil record?

453 upvotes • [deleted]

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Why are the sex organs and excretory organs in humans so intermingled?

453 upvotes • brainburger

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How do cars deal with speed wobble at extreme speeds?

453 upvotes • Das_Pirate

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Why don't modern cellphones create interferences near speakers any more?

453 upvotes • leducdeguise

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When astronomers say that "space is expanding," does that just mean that the things in space are moving away (say, from 3 to 7 cm on a ruler), or does it mean the unit length itself is being distorted (it's still 3 cm, but centimeters themselves are now longer)?

453 upvotes • WartimeHotTot

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Are there any smells humans can't get used to? If so, is it because of the brain or is it because of the composite that makes smell?

452 upvotes • Haiducu

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How did fish get into isolated mountain lakes, without river outlets?

452 upvotes • JackhusChanhus

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Why do flames coming out of a rocket engine get narrower?

452 upvotes • OmnipotentEntity

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Do the viruses that cause the common cold leave lasting damage to any part of the body like covid variants do?

452 upvotes • th4tsmyus3rn4me

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/r/AskScience, everybody!!!

451 upvotes • TheWalruss

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Was there ever a time in the history of the earth where if an intelligent civilization had arisen and self-destructed, we would now see no evidence in the fossil record?	453	[deleted]
Why are the sex organs and excretory organs in humans so intermingled?	453	brainburger
How do cars deal with speed wobble at extreme speeds?	453	Das_Pirate
Why don't modern cellphones create interferences near speakers any more?	453	leducdeguise
When astronomers say that "space is expanding," does that just mean that the things in space are moving away (say, from 3 to 7 cm on a ruler), or does it mean the unit length itself is being distorted (it's still 3 cm, but centimeters themselves are now longer)?	453	WartimeHotTot
Are there any smells humans can't get used to? If so, is it because of the brain or is it because of the composite that makes smell?	452	Haiducu
How did fish get into isolated mountain lakes, without river outlets?	452	JackhusChanhus
Why do flames coming out of a rocket engine get narrower?	452	OmnipotentEntity
Do the viruses that cause the common cold leave lasting damage to any part of the body like covid variants do?	452	th4tsmyus3rn4me
/r/AskScience, everybody!!!	451	TheWalruss