/u/celo753's posts in /r/askscience

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Dogs can smell COVID infections in patients, with as much accuracy as a PCR test. What's stopping us from building a machine that 'smells' the patients and detects it as well, if not better, than a dog?

11026 upvotes

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Why are antivirals so much rarer than antibiotics?

2862 upvotes

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If I had a single atom of gold, how would I be able to tell if it's in liquid / solid / gas state? Would I even be able to do it?

51 upvotes

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How can there be more matter than anti-matter? Shouldn't the big bang have created equal amounts?

18 upvotes

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Why are the poles frozen?

2 upvotes

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Would an object with mass at the speed of mass be impossible to slow down?

1 upvotes

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If gravity affects anything with mass anywhere, why does the universe expand?

1 upvotes

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Why is there almost no hydrogen in the earth's atmosphere?

1 upvotes

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If there was a manned mission to mars, and somebody dies outside their space suit, would the body decompose?

1 upvotes

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Does a battery really bounce if discharged?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Dogs can smell COVID infections in patients, with as much accuracy as a PCR test. What's stopping us from building a machine that 'smells' the patients and detects it as well, if not better, than a dog?	11026
Why are antivirals so much rarer than antibiotics?	2862
If I had a single atom of gold, how would I be able to tell if it's in liquid / solid / gas state? Would I even be able to do it?	51
How can there be more matter than anti-matter? Shouldn't the big bang have created equal amounts?	18
Why are the poles frozen?	2
Would an object with mass at the speed of mass be impossible to slow down?	1
If gravity affects anything with mass anywhere, why does the universe expand?	1
Why is there almost no hydrogen in the earth's atmosphere?	1
If there was a manned mission to mars, and somebody dies outside their space suit, would the body decompose?	1
Does a battery really bounce if discharged?	1