/r/askscience

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Was working at Jimmy John's today when I customer came in and was severely allergic to cucumbers but could eat pickles, how's that possible?

6317 upvotes • ZeusTheMooose

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If 2 photons are traveling in parallel through space unhindered, will inflation eventually split them up?

6316 upvotes • dysthal

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How catastrophic is an earthquake for deep sea creatures?

6314 upvotes • 6873487

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Is there anything the human body has three of?

6304 upvotes • manic_lethargy

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Keep hearing that we are running out of lithium, so how close are we to combining protons and electrons to form elements from the periodic table?

6303 upvotes • HelpMeDevices

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Stupid question, If there were metal buildings/electronics more than 13k+ years ago, would we be able to know about it?

6300 upvotes • TwitchyFingers

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Is the stomach basically a constant ‘vat of acid’ that the food we eat just plops into and starts breaking down or do the stomach walls simply secrete the acids rapidly when needed?

6297 upvotes • HumaniAlon

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If we defined the meter as a static portion of the width of the universe (so as one expanded in size, the other did proportionally), about how much would our meter be expanding in, say, an hour?

6291 upvotes • Marty_mcfresh

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What is the very worst case scenario in relation to the rise in water levels? Can Earth become an ocean planet?

6286 upvotes • MaimedPhoenix

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Given that radiowaves reduce amplitude according to the inverse square law, how do we maintain contact with distant spacecraft like Voyager 1 & 2?

6286 upvotes • banwe11

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Was working at Jimmy John's today when I customer came in and was severely allergic to cucumbers but could eat pickles, how's that possible?	6317	ZeusTheMooose
If 2 photons are traveling in parallel through space unhindered, will inflation eventually split them up?	6316	dysthal
How catastrophic is an earthquake for deep sea creatures?	6314	6873487
Is there anything the human body has three of?	6304	manic_lethargy
Keep hearing that we are running out of lithium, so how close are we to combining protons and electrons to form elements from the periodic table?	6303	HelpMeDevices
Stupid question, If there were metal buildings/electronics more than 13k+ years ago, would we be able to know about it?	6300	TwitchyFingers
Is the stomach basically a constant ‘vat of acid’ that the food we eat just plops into and starts breaking down or do the stomach walls simply secrete the acids rapidly when needed?	6297	HumaniAlon
If we defined the meter as a static portion of the width of the universe (so as one expanded in size, the other did proportionally), about how much would our meter be expanding in, say, an hour?	6291	Marty_mcfresh
What is the very worst case scenario in relation to the rise in water levels? Can Earth become an ocean planet?	6286	MaimedPhoenix
Given that radiowaves reduce amplitude according to the inverse square law, how do we maintain contact with distant spacecraft like Voyager 1 & 2?	6286	banwe11