/r/askscience

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How is the distance an animal can smell calculated?

637 upvotes • awoloozlefinch

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how complex does an animal's brain have to be in order for it to need sleep?

636 upvotes • IAmSteven

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How are phones, computers, and other electronic devices able to determine how much power is left in the batteries that are powering them?

636 upvotes • MandatoryMahi

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How do warts function?

636 upvotes • A_Privateer

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Has toothpaste improved over the years?

636 upvotes • Crackmacs

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If you're lost, is it better to look for your search party or wait?

636 upvotes • Jackissocool

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How does hair conditioner work, and why do we use it?

636 upvotes • cutcreasecurse

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How do invasive species manage to propagate in an area without severe inbreeding?

636 upvotes • 3serious

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If a lack of sunlight has the propensity to make us depressed, why did humans migrate to the Arctic Circle?

635 upvotes • HonoraryMancunian

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Do animals get/have mental disorders?

635 upvotes • ericpalmer4

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
How is the distance an animal can smell calculated?	637	awoloozlefinch
how complex does an animal's brain have to be in order for it to need sleep?	636	IAmSteven
How are phones, computers, and other electronic devices able to determine how much power is left in the batteries that are powering them?	636	MandatoryMahi
How do warts function?	636	A_Privateer
Has toothpaste improved over the years?	636	Crackmacs
If you're lost, is it better to look for your search party or wait?	636	Jackissocool
How does hair conditioner work, and why do we use it?	636	cutcreasecurse
How do invasive species manage to propagate in an area without severe inbreeding?	636	3serious
If a lack of sunlight has the propensity to make us depressed, why did humans migrate to the Arctic Circle?	635	HonoraryMancunian
Do animals get/have mental disorders?	635	ericpalmer4