/r/askscience

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What happens to muscle mass that is gained through exercise, when you stop exercising?

682 upvotes • ZippyLoomX

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Does the electromagnetic spectrum abruptly stop at gamma rays.. or are there higher energy/shorter wavelengths out there?

682 upvotes • rhinopoacher

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If an infrared camera works because "warm things emit light," why doesn't the warm air between the camera and the object also emit light and wipe out the image?

682 upvotes • TheRealDumbledore

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Photons are said not to experience time. Does this still hold true when they are slowed through a medium? How?

682 upvotes • L_Nygaard

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Why is sugar sticky?

682 upvotes • kidlit

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Do I really need to brush my teeth for 1-2 minutes? Why isn't a few times over each area good enough?

681 upvotes • Live_for_Now

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How do some plants (olives, avocados, coconuts) produce saturated fat?

681 upvotes • thehemanchronicles

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If humans suddenly disappeared from Earth, how long would it take before air pollution was eliminated?

681 upvotes • medicfourlife

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Why is pre-fission uranium relatively harmless to humans but spent nuclear fuel must be locked away for hundreds of years?

681 upvotes • [deleted]

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If Thorium is so abundant and cheap, why is it so hard to get a sample of?

681 upvotes • Leav

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
What happens to muscle mass that is gained through exercise, when you stop exercising?	682	ZippyLoomX
Does the electromagnetic spectrum abruptly stop at gamma rays.. or are there higher energy/shorter wavelengths out there?	682	rhinopoacher
If an infrared camera works because "warm things emit light," why doesn't the warm air between the camera and the object also emit light and wipe out the image?	682	TheRealDumbledore
Photons are said not to experience time. Does this still hold true when they are slowed through a medium? How?	682	L_Nygaard
Why is sugar sticky?	682	kidlit
Do I really need to brush my teeth for 1-2 minutes? Why isn't a few times over each area good enough?	681	Live_for_Now
How do some plants (olives, avocados, coconuts) produce saturated fat?	681	thehemanchronicles
If humans suddenly disappeared from Earth, how long would it take before air pollution was eliminated?	681	medicfourlife
Why is pre-fission uranium relatively harmless to humans but spent nuclear fuel must be locked away for hundreds of years?	681	[deleted]
If Thorium is so abundant and cheap, why is it so hard to get a sample of?	681	Leav