/r/askscience

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How do our ears make wax? Is this the only place in our body where wax is made?

750 upvotes • rimcrimp

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If I were to put a fish in a bowl of water then put that bowl in a vacuum, would the fish notice any changes?

749 upvotes • drkflame67

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Do renewable energy sources produce enough energy to offset the energy cost of producing them?

749 upvotes • Supermau

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If a supersonic train approached you while intermittently sounding its horn, would you hear the horn sounds out of chronological order?

749 upvotes • TheJizzle

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Why exactly can nothing go faster than the speed of light?

748 upvotes • purpsicle27

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What exactly is occuring biologically when you get that sinking feeling in your stomach after something terrible just happened?

748 upvotes • Geaux

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Why can't I graft plums branches to orange trees or nectarines to apple trees? Is a fruit salad tree possible?

748 upvotes • Hoo_Bear

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Is converting water to steam to turn a turbine really still the most efficient way to generate electricity?

747 upvotes • HedgehogBC

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When food packaging says it has X amount of calories, is that the amount of calories in the food, or the typical amount absorbed by the body?

747 upvotes • [deleted]

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If an object acquires near-light speed and its observed mass increases manifold , will its interaction with other objects through gravitational forces change as well ?

747 upvotes • desibubsuckhot

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
How do our ears make wax? Is this the only place in our body where wax is made?	750	rimcrimp
If I were to put a fish in a bowl of water then put that bowl in a vacuum, would the fish notice any changes?	749	drkflame67
Do renewable energy sources produce enough energy to offset the energy cost of producing them?	749	Supermau
If a supersonic train approached you while intermittently sounding its horn, would you hear the horn sounds out of chronological order?	749	TheJizzle
Why exactly can nothing go faster than the speed of light?	748	purpsicle27
What exactly is occuring biologically when you get that sinking feeling in your stomach after something terrible just happened?	748	Geaux
Why can't I graft plums branches to orange trees or nectarines to apple trees? Is a fruit salad tree possible?	748	Hoo_Bear
Is converting water to steam to turn a turbine really still the most efficient way to generate electricity?	747	HedgehogBC
When food packaging says it has X amount of calories, is that the amount of calories in the food, or the typical amount absorbed by the body?	747	[deleted]
If an object acquires near-light speed and its observed mass increases manifold , will its interaction with other objects through gravitational forces change as well ?	747	desibubsuckhot