/r/askscience

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Why are most of the large impact craters on the moon located on the side facing the Earth? Wouldn't the other side be less shielded?

705 upvotes • DweadPiwateWoberts

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Is it possible to make a condom that changes color when it encounters a pathogen using immunofluorescence?

704 upvotes • [deleted]

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Why can't we just dig a deep enough borehole anywhere we need it to take advantage of geothermal energy?

704 upvotes • Zenquin

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Why does red plus blue make magenta with additive color mixing?

704 upvotes • casebash

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My grandma takes nitroglycerin pills for her heart. I was led to believe that nitroglycerin is incredibly explosive. Why hasn't this been an issue for her?

704 upvotes • HeyThereCharlie

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How does the air inside the tire of a moving car behave? For example does it "spin" at a similar rpm to the tire? Also what effect does centripetal force have on the air if any at all?

704 upvotes • rss1080

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Why Do Certain Chemicals Cause Different Individuals To Experience Similar Complex Thoughts/Hallucinations? Where Is The Information Coming From?

704 upvotes • Suozlx

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Diseases like Ebola and Rabies are much more fatal in humans than in their host species. Are there any diseases that are relatively safe in humans, but are lethal in animals?

704 upvotes • dumname2_1

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Would the placebo effect still be observed in a culture that has no concept of medicine?

703 upvotes • taximes

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Why is it easy to balance on a bike while moving, but hard while it isn't moving?

703 upvotes • rhgolf44

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Why are most of the large impact craters on the moon located on the side facing the Earth? Wouldn't the other side be less shielded?	705	DweadPiwateWoberts
Is it possible to make a condom that changes color when it encounters a pathogen using immunofluorescence?	704	[deleted]
Why can't we just dig a deep enough borehole anywhere we need it to take advantage of geothermal energy?	704	Zenquin
Why does red plus blue make magenta with additive color mixing?	704	casebash
My grandma takes nitroglycerin pills for her heart. I was led to believe that nitroglycerin is incredibly explosive. Why hasn't this been an issue for her?	704	HeyThereCharlie
How does the air inside the tire of a moving car behave? For example does it "spin" at a similar rpm to the tire? Also what effect does centripetal force have on the air if any at all?	704	rss1080
Why Do Certain Chemicals Cause Different Individuals To Experience Similar Complex Thoughts/Hallucinations? Where Is The Information Coming From?	704	Suozlx
Diseases like Ebola and Rabies are much more fatal in humans than in their host species. Are there any diseases that are relatively safe in humans, but are lethal in animals?	704	dumname2_1
Would the placebo effect still be observed in a culture that has no concept of medicine?	703	taximes
Why is it easy to balance on a bike while moving, but hard while it isn't moving?	703	rhgolf44