/u/Hello-Universe's posts in /r/askscience

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Does it burn more calories to walk on your hands or your feet? If hands, is it possible to train our arms/other muscles to be more calorie efficient?

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So exactly how dangerous is it to mix bleach or Clorox with cat urine?

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Is natural selection noticeably "sped up" in smaller populations ?

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Is it possible there are lifeforms anywhere in the universe that have developed an ability to evolve so rapidly that they would almost certainly be super intelligent in a very short time?

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How "vast" would the microscopic interconnections between, say, a gallon's worth of mold and bacteria be compared to our universe?

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If we're so intelligent or evolved, than why do most other species build homes that fit their needs perfectly efficiently and have such a minimal footprint?

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Why are batteries so heavy? Why can't we store energy in other forms, in mediums such as carbon?

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Energy cannot be created or destroyed. But what if it can? How do we know for sure? And what conclusive evidence do we have that the big bag was an expansion?

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I'm in the mood to watch a really cool documentary about the universe... Where can I see something new and relevant online for free?

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Would it be possible to safely simulate what is happening inside of a star to an object the size of a large marble hear on earth, sort of as a souvenir with a mild eternal fire brewing inside of it?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Does it burn more calories to walk on your hands or your feet? If hands, is it possible to train our arms/other muscles to be more calorie efficient?	1
So exactly how dangerous is it to mix bleach or Clorox with cat urine?	1
Is natural selection noticeably "sped up" in smaller populations ?	1
Is it possible there are lifeforms anywhere in the universe that have developed an ability to evolve so rapidly that they would almost certainly be super intelligent in a very short time?	1
How "vast" would the microscopic interconnections between, say, a gallon's worth of mold and bacteria be compared to our universe?	1
If we're so intelligent or evolved, than why do most other species build homes that fit their needs perfectly efficiently and have such a minimal footprint?	1
Why are batteries so heavy? Why can't we store energy in other forms, in mediums such as carbon?	1
Energy cannot be created or destroyed. But what if it can? How do we know for sure? And what conclusive evidence do we have that the big bag was an expansion?	0
I'm in the mood to watch a really cool documentary about the universe... Where can I see something new and relevant online for free?	0
Would it be possible to safely simulate what is happening inside of a star to an object the size of a large marble hear on earth, sort of as a souvenir with a mild eternal fire brewing inside of it?	0