/r/askscience

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Is it a coincidence that all elements are present on Earth?

9881 upvotes • paolog

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How many mouse clicks would it take to put the space shuttle into orbit?

9877 upvotes • TheArksmith

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The human population is at 7.7 billion. Has any other mammal ever reached that population level?

9876 upvotes • fslashd

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In a desert, what is under all of the sand?

9867 upvotes • sloposaurus

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Would bee hives grow larger if we didn't harvest their honey?

9861 upvotes • MrZepost

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Does the earth "lose/gain" water or is it truly a closed system?

9843 upvotes • fungukungfu

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Do other monogamous animals ever "fall out of love" and separate like humans do?

9843 upvotes • nicmos

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Is it possible for animals to be allergic to humans?

9840 upvotes • hsym

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Do galaxies have clearly defined borders, or do they just kind of bleed into each other?

9839 upvotes • Toorelad

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Does the temperature of water affect its ability to put out a fire?

9824 upvotes • SPAWNofII

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Is it a coincidence that all elements are present on Earth?	9881	paolog
How many mouse clicks would it take to put the space shuttle into orbit?	9877	TheArksmith
The human population is at 7.7 billion. Has any other mammal ever reached that population level?	9876	fslashd
In a desert, what is under all of the sand?	9867	sloposaurus
Would bee hives grow larger if we didn't harvest their honey?	9861	MrZepost
Does the earth "lose/gain" water or is it truly a closed system?	9843	fungukungfu
Do other monogamous animals ever "fall out of love" and separate like humans do?	9843	nicmos
Is it possible for animals to be allergic to humans?	9840	hsym
Do galaxies have clearly defined borders, or do they just kind of bleed into each other?	9839	Toorelad
Does the temperature of water affect its ability to put out a fire?	9824	SPAWNofII