/u/mikevee78's posts in /r/askscience

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There are many fossil finds documenting human evolution and hominin subspecies since our split from chimpanzees. What evidence do we have for chimpanzee evolution during this timeframe?

2861 upvotes

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When people forge metal and parts flake off, what's actually happening to the metal?

13 upvotes

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Why is the Florida Coast Darkened?

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What is the force that drives light to move at the speed that it does? Or to put more simply, what propels light?

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Does light of different wavelengths have different speeds in a medium?

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What came first, bacteria or viruses?

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Why do radio waves go through objects, but light doesn’t, even though they are both made of photons?

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What is the use of fluorine-18 in a PET scan?

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How does our body know when to wake up in the morning?

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Why are there extreme differences of temperature accros the world?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
There are many fossil finds documenting human evolution and hominin subspecies since our split from chimpanzees. What evidence do we have for chimpanzee evolution during this timeframe?	2861
When people forge metal and parts flake off, what's actually happening to the metal?	13
Why is the Florida Coast Darkened?	1
What is the force that drives light to move at the speed that it does? Or to put more simply, what propels light?	1
Does light of different wavelengths have different speeds in a medium?	1
What came first, bacteria or viruses?	1
Why do radio waves go through objects, but light doesn’t, even though they are both made of photons?	1
What is the use of fluorine-18 in a PET scan?	1
How does our body know when to wake up in the morning?	1
Why are there extreme differences of temperature accros the world?	1