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

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Why is it that coffee stains your teeth brown, but milk doesn’t whiten them?

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Why do humans require many months after birth to become independent, but other animals are born with the same level of independence?

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Why is it easier to throw paper into a trash can when it’s crumpled into a ball?

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Why don’t people get pimples in their mouths?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why is it that coffee stains your teeth brown, but milk doesn’t whiten them?	1
Why do humans require many months after birth to become independent, but other animals are born with the same level of independence?	1
Why is it easier to throw paper into a trash can when it’s crumpled into a ball?	1
Why don’t people get pimples in their mouths?	1