/r/askscience

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Does reflection actually happen only at the surface of a material or is there some penetration depth from which light can still scatter back?

559 upvotes • nonicknamefornic

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Is it possible to see the American flag on the moon via telescope?

559 upvotes • rinkusonic

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Why do we get mold in other warm and moist areas but not in our armpits?

559 upvotes • 6ran9eee

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How do we have more woolly mammoth DNA than dodo DNA if woolly mammoths died off thousands of years ago and dodos only died off a few hundred?

558 upvotes • Memer9456

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How do we 'hear' our own thoughts?

558 upvotes • Sicarium

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If I leave the faucet on in an area with abundant freshwater resources (e.g., the Great Lakes region), is that water "wasted?" Or does it make its way back into the water supply pretty easily?

558 upvotes • Ferociousaurus

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Would your body eventually absorb a peanut if it was surgically placed under your skin?

558 upvotes • SugarE

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Is boredom harmful for the mind?

558 upvotes • sole21000

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When I "see heat waves" rising from a hot, dry street, what is it that I'm actually seeing?

558 upvotes • gh282016

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If microwaves are "non-ionizing", how does a grape create plasma in a microwave oven?

558 upvotes • lcarusLlVES

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Does reflection actually happen only at the surface of a material or is there some penetration depth from which light can still scatter back?	559	nonicknamefornic
Is it possible to see the American flag on the moon via telescope?	559	rinkusonic
Why do we get mold in other warm and moist areas but not in our armpits?	559	6ran9eee
How do we have more woolly mammoth DNA than dodo DNA if woolly mammoths died off thousands of years ago and dodos only died off a few hundred?	558	Memer9456
How do we 'hear' our own thoughts?	558	Sicarium
If I leave the faucet on in an area with abundant freshwater resources (e.g., the Great Lakes region), is that water "wasted?" Or does it make its way back into the water supply pretty easily?	558	Ferociousaurus
Would your body eventually absorb a peanut if it was surgically placed under your skin?	558	SugarE
Is boredom harmful for the mind?	558	sole21000
When I "see heat waves" rising from a hot, dry street, what is it that I'm actually seeing?	558	gh282016
If microwaves are "non-ionizing", how does a grape create plasma in a microwave oven?	558	lcarusLlVES