/r/askscience

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Will filling an inflatable boat with helium or hydrogen make it more buoyant?

987 upvotes • Abhi_Jaman_92

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RE: the sinkholes in Florida. How much of Florida is sitting on geological swiss cheese? Is there a map of a cross section of the peninsula somewhere?

986 upvotes • frij0l3

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Why does my nose get watery when I eat something really spicy?

986 upvotes • albatross49

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Do more physically attractive people tend to have more pleasant (or even sexy) voices? What role does voice play in human mate selection?

985 upvotes • Talvanen

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Are there stars that don't emit visible light?

985 upvotes • travellingdreamer

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I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection?

985 upvotes • Corvuscoraxaphro

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If something is a temperature of absolute zero, does that mean the electrons around the proton have completely stopped?

984 upvotes • BrotasticalManDude

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What activates seeds to grow? Like, why can I leave a seed sitting on a table for years and it won't do anything but when I put it in dirt and water it, it starts to grow. How does it know, and was it doing?

984 upvotes • Redsmallboy

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Why are Asian and African elephants different genera, as opposed to different species in the same genus?

983 upvotes • someguyinahat

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To what degree can lungs repair damage caused by smoking?

983 upvotes • Molotov_Is_Dead

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Will filling an inflatable boat with helium or hydrogen make it more buoyant?	987	Abhi_Jaman_92
RE: the sinkholes in Florida. How much of Florida is sitting on geological swiss cheese? Is there a map of a cross section of the peninsula somewhere?	986	frij0l3
Why does my nose get watery when I eat something really spicy?	986	albatross49
Do more physically attractive people tend to have more pleasant (or even sexy) voices? What role does voice play in human mate selection?	985	Talvanen
Are there stars that don't emit visible light?	985	travellingdreamer
I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection?	985	Corvuscoraxaphro
If something is a temperature of absolute zero, does that mean the electrons around the proton have completely stopped?	984	BrotasticalManDude
What activates seeds to grow? Like, why can I leave a seed sitting on a table for years and it won't do anything but when I put it in dirt and water it, it starts to grow. How does it know, and was it doing?	984	Redsmallboy
Why are Asian and African elephants different genera, as opposed to different species in the same genus?	983	someguyinahat
To what degree can lungs repair damage caused by smoking?	983	Molotov_Is_Dead