/u/FalchionX10's posts in /r/askscience

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Why is perpetual motion impossible?

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What is the purpose of humour? Why do we try to make others laugh and what benefits does this bring us as a species?

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Is it really darkest just before dawn? If so, what is the science behind this?

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Did large dinosaurs suffer from joint/health issues, much like larger breeds of dogs do?

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Does gravity have a limit?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why is perpetual motion impossible?	1
What is the purpose of humour? Why do we try to make others laugh and what benefits does this bring us as a species?	1
Is it really darkest just before dawn? If so, what is the science behind this?	1
Did large dinosaurs suffer from joint/health issues, much like larger breeds of dogs do?	1
Does gravity have a limit?	1