/r/askscience

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I wear glasses. Why did the optometrist not give me super vision?

1243 upvotes • [deleted]

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If salt raises the boiling temp of water, is there additive that will let water freeze at a higher temp also?

1243 upvotes • pryos1

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What happens when two separate earthquakes occur simultaneously far enough apart, but close enough to a point that would feel both at the same time?

1241 upvotes • Shadowequalizer

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I heard that a large percentage of your food intake goes into keeping your body at the right temperature. Does that mean if you lived at exactly 37C (100F I believe) you wouldn't have to eat as much, and that people who live in arctic temperature have to eat a lot more?

1240 upvotes • [deleted]

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When a wheel or anything circular spins really fast, why does it sometimes look like its spinning backwards and then spin forwards again?

1240 upvotes • iZlatani

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Why can we talk in our heads?

1239 upvotes • andrewhatesyou

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What does Neptune look like at ground level? Would everything be blue or is that just an atmospherical illusion when seen from space?

1239 upvotes • sheburns

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When someone is emotional and “choked up” or has a lump in their throat, what is actually happening?

1239 upvotes • BobLoblawsLawBlogged

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When did tarantulas lose the ability to produce silk / weave webs?

1239 upvotes • nickoskal024

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if science revives an extinct migrating bird, will it know straight away where to go and when?

1238 upvotes • leducdeguise

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
I wear glasses. Why did the optometrist not give me super vision?	1243	[deleted]
If salt raises the boiling temp of water, is there additive that will let water freeze at a higher temp also?	1243	pryos1
What happens when two separate earthquakes occur simultaneously far enough apart, but close enough to a point that would feel both at the same time?	1241	Shadowequalizer
I heard that a large percentage of your food intake goes into keeping your body at the right temperature. Does that mean if you lived at exactly 37C (100F I believe) you wouldn't have to eat as much, and that people who live in arctic temperature have to eat a lot more?	1240	[deleted]
When a wheel or anything circular spins really fast, why does it sometimes look like its spinning backwards and then spin forwards again?	1240	iZlatani
Why can we talk in our heads?	1239	andrewhatesyou
What does Neptune look like at ground level? Would everything be blue or is that just an atmospherical illusion when seen from space?	1239	sheburns
When someone is emotional and “choked up” or has a lump in their throat, what is actually happening?	1239	BobLoblawsLawBlogged
When did tarantulas lose the ability to produce silk / weave webs?	1239	nickoskal024
if science revives an extinct migrating bird, will it know straight away where to go and when?	1238	leducdeguise