/u/[deleted]'s posts in /r/askscience

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If the human ear can only hear frequncies up to about 20-22KHz, then what's the point of using a higher sampling rate in digital audio, such as 48KHz?

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If WWF says the Amazon rainforest produces 20% of the worlds oxygen, how is this possible if it is such a small amount of land mass compared to grass, trees and brush in the rest of the world.

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Does 1/2 + 1/4 + 1/8 + 1/16 + 1/32 ... = 1?

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What's wrong with this baby?

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What would a monomolecular sword (or wire) really do?

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When we search for other planets that may support life, why do we postulate that life must exist only within the confines that we currently know it to exist?

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Is LASIK reasonably safe?

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Is it possible to train your eyes to improve them?

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Would taking a cellulase supplement the way lactose intolerant people take lactase allow a human to each grass and other no digestible plant matter? If so, could this be a way of addressing world hunger?

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Given the right conditions and diet, is extremely prolonged life (i.e. significantly greater than 122 years or whatever the confirmed record is) theoretically possible?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If the human ear can only hear frequncies up to about 20-22KHz, then what's the point of using a higher sampling rate in digital audio, such as 48KHz?	27
If WWF says the Amazon rainforest produces 20% of the worlds oxygen, how is this possible if it is such a small amount of land mass compared to grass, trees and brush in the rest of the world.	27
Does 1/2 + 1/4 + 1/8 + 1/16 + 1/32 ... = 1?	27
What's wrong with this baby?	27
What would a monomolecular sword (or wire) really do?	27
When we search for other planets that may support life, why do we postulate that life must exist only within the confines that we currently know it to exist?	27
Is LASIK reasonably safe?	27
Is it possible to train your eyes to improve them?	27
Would taking a cellulase supplement the way lactose intolerant people take lactase allow a human to each grass and other no digestible plant matter? If so, could this be a way of addressing world hunger?	27
Given the right conditions and diet, is extremely prolonged life (i.e. significantly greater than 122 years or whatever the confirmed record is) theoretically possible?	27