/r/askscience

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Are there any (currently) unsolved equations that can change the world or how we look at the universe?

8823 upvotes • ChristoFuhrer

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If you dug a hole straight down to the other side of the earth, what would happen if you dropped something through it?

8821 upvotes • [deleted]

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In Earth travel, we use North, South, East, and West, plus altitude for three-dimensional travel. Since those are all relative to the Earth, what do they use for space travel?

8809 upvotes • Doc_Hooligan

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Prosthetics: Can someone born without a limb (rather than losing it after birth) use advanced prosthetics controlled by nerves and neural pathways?

8801 upvotes • Rational-Discourse

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A tiger has tested positive for COVID-19. Is this coronavirus particularly good at species jumping relative to other coronaviruses? Have house cats become infected yet by this virus?

8791 upvotes • son_of_tigers

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How do you grow seedless grapes of you don’t get any seeds from them ?

8790 upvotes • Slithery_0

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How come when hot metal is placed in cold water, it does not shatter like glass?

8782 upvotes • HolyShamrockBatman

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What is happening to engine oil that requires it to be changed every 6000km (3000miles)?

8778 upvotes • paramedic-tim

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Why is consuming activated charcoal harmless (and, in fact, encouraged for certain digestive issues), yet eating burnt (blackened) food is obviously bad-tasting and discouraged as harmful to one's health?

8772 upvotes • assbaring69

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Does clinical depression affect intelligence/IQ measures? Does it have any affect on the ability to learn?

8763 upvotes • [deleted]

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Are there any (currently) unsolved equations that can change the world or how we look at the universe?	8823	ChristoFuhrer
If you dug a hole straight down to the other side of the earth, what would happen if you dropped something through it?	8821	[deleted]
In Earth travel, we use North, South, East, and West, plus altitude for three-dimensional travel. Since those are all relative to the Earth, what do they use for space travel?	8809	Doc_Hooligan
Prosthetics: Can someone born without a limb (rather than losing it after birth) use advanced prosthetics controlled by nerves and neural pathways?	8801	Rational-Discourse
A tiger has tested positive for COVID-19. Is this coronavirus particularly good at species jumping relative to other coronaviruses? Have house cats become infected yet by this virus?	8791	son_of_tigers
How do you grow seedless grapes of you don’t get any seeds from them ?	8790	Slithery_0
How come when hot metal is placed in cold water, it does not shatter like glass?	8782	HolyShamrockBatman
What is happening to engine oil that requires it to be changed every 6000km (3000miles)?	8778	paramedic-tim
Why is consuming activated charcoal harmless (and, in fact, encouraged for certain digestive issues), yet eating burnt (blackened) food is obviously bad-tasting and discouraged as harmful to one's health?	8772	assbaring69
Does clinical depression affect intelligence/IQ measures? Does it have any affect on the ability to learn?	8763	[deleted]