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

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If cats are so careful about where they urinate and defecate, why do they apparently not care where they vomit?

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At what point in human evolution did our ancestors determine that sex=babies?

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I can get a flu shot through work for $15. Is it worth it?

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Why is it that the hypertrophy resulting from resistance exercise is maximized when your sets have ~10 reps?

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Someone just posted on my facebook that you should frequently change protein types to avoid allergies. Does that have any basis in fact?

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My understanding is that both Sodium and Chlorine by themselves are dangerous (explodes in water and is toxic, respectively). If that is true, why is dissolved sodium chloride (salt) perfectly safe? Why don't the dissolved ions have the same properties as sodium and chloride separately?

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Why aren't more things nuclear powered?

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Is there a reason why few buildings have 2 elevators? There always seem to be either 1 elevator or three elevators.

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I know someone who has a placenta encapsulation business. She claims a woman taking the pills of her powdered placenta will reduce the risk of post-partum depression, and many other ailments. Is this possible?

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Is it more efficient for a cyclist to carry a load on his back, in a pannier (ie over the wheels), or in a trailer? Why?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If cats are so careful about where they urinate and defecate, why do they apparently not care where they vomit?	4
At what point in human evolution did our ancestors determine that sex=babies?	2
I can get a flu shot through work for $15. Is it worth it?	2
Why is it that the hypertrophy resulting from resistance exercise is maximized when your sets have ~10 reps?	2
Someone just posted on my facebook that you should frequently change protein types to avoid allergies. Does that have any basis in fact?	2
My understanding is that both Sodium and Chlorine by themselves are dangerous (explodes in water and is toxic, respectively). If that is true, why is dissolved sodium chloride (salt) perfectly safe? Why don't the dissolved ions have the same properties as sodium and chloride separately?	2
Why aren't more things nuclear powered?	2
Is there a reason why few buildings have 2 elevators? There always seem to be either 1 elevator or three elevators.	2
I know someone who has a placenta encapsulation business. She claims a woman taking the pills of her powdered placenta will reduce the risk of post-partum depression, and many other ailments. Is this possible?	2
Is it more efficient for a cyclist to carry a load on his back, in a pannier (ie over the wheels), or in a trailer? Why?	2