/r/askscience

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How do animals like squirrels get water when there are no nearby rivers, streams or ponds?

4851 upvotes • bluecheese31

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If a neutrinos can travel through the earth without ever colliding with another particle due to their incredibly small mass, why do photons collide with anything at all when their mass is non-existent?

4851 upvotes • WACKY_ALL_CAPS_NAME

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It is reported that redheads, with their mutated MC1R gene, require about 20% more anesthesia than the average person. Are there other reported correlations between this gene and other effects (pain tolerance, drug tolerance, metabolism, etc...)?

4851 upvotes • Tyjovi

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When metal is hot enough to start emitting light in the visible spectrum, how come it goes from red to white? Why don’t we have green-hot or blue-hot?

4840 upvotes • woofwoofwoof

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Why don't humans take preventative medicine for tick-borne illnesses like animals do?

4839 upvotes • chudcake

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Is body chemistry affected by sound, in the same way that melatonin production is affected by light?

4838 upvotes • iorgfeflkd

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Do birds, spiders, and bees learn how to build nests, webs, or hives or is it built in?

4834 upvotes • Phosamedo

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Is licking a minor wound (such as a small cut) generally effective or harmful?

4832 upvotes • twinfiresigns14

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With the Tonga Volcano happening; my son asked me how long it would take for another New Zealand-sized island to emerge in the south pacific. Would it be a matter of thousands of years or billions? Or could it happen tomorrow?

4829 upvotes • blihk

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Why doesn't semen exit the penis in a stream like urine but instead in short bursts? Does this serve any advantages? [NSFW] NSFW

4828 upvotes • Kallifrax

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
How do animals like squirrels get water when there are no nearby rivers, streams or ponds?	4851	bluecheese31
If a neutrinos can travel through the earth without ever colliding with another particle due to their incredibly small mass, why do photons collide with anything at all when their mass is non-existent?	4851	WACKY_ALL_CAPS_NAME
It is reported that redheads, with their mutated MC1R gene, require about 20% more anesthesia than the average person. Are there other reported correlations between this gene and other effects (pain tolerance, drug tolerance, metabolism, etc...)?	4851	Tyjovi
When metal is hot enough to start emitting light in the visible spectrum, how come it goes from red to white? Why don’t we have green-hot or blue-hot?	4840	woofwoofwoof
Why don't humans take preventative medicine for tick-borne illnesses like animals do?	4839	chudcake
Is body chemistry affected by sound, in the same way that melatonin production is affected by light?	4838	iorgfeflkd
Do birds, spiders, and bees learn how to build nests, webs, or hives or is it built in?	4834	Phosamedo
Is licking a minor wound (such as a small cut) generally effective or harmful?	4832	twinfiresigns14
With the Tonga Volcano happening; my son asked me how long it would take for another New Zealand-sized island to emerge in the south pacific. Would it be a matter of thousands of years or billions? Or could it happen tomorrow?	4829	blihk
Why doesn't semen exit the penis in a stream like urine but instead in short bursts? Does this serve any advantages? [NSFW] NSFW	4828	Kallifrax