/u/N8CCRG's posts in /r/askscience

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Apéritifs and digestifs supposedly stimulate your appetite and aid in digestion, respectively. Is there any evidence/science behind this?

2942 upvotes

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Under what circumstances is the difference between "microgravity" and "weightlessness" significant?

1558 upvotes

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How much ancient biological matter did it take to make one gallon of gasoline?

10 upvotes

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Most animals run, but some animals hop (e.g. rabbit, frog, kangaroo). Why is hopping better for them but running is better for most?

7 upvotes

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The earth's core is still slowly cooling. Is more of this heat lost through conduction through the earth's surface, or through hot material coming up through things like volcanoes?

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How dense is our local part of the galaxy?

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If the Oort Cloud were to double in density in half of the sky, or disappear completely, would we be able to see the difference?

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When scientists talk about a "once in 1000 years" flood or storm, how large an area are they limiting that to?

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At what rate does my brain consume energy (calories)? How much does that fluctuate if I'm doing something like math or reading a book or some other mental activity?

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Order of magnitude: How many stars needed to explode to make enough heavy material to form the earth?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Apéritifs and digestifs supposedly stimulate your appetite and aid in digestion, respectively. Is there any evidence/science behind this?	2942
Under what circumstances is the difference between "microgravity" and "weightlessness" significant?	1558
How much ancient biological matter did it take to make one gallon of gasoline?	10
Most animals run, but some animals hop (e.g. rabbit, frog, kangaroo). Why is hopping better for them but running is better for most?	7
The earth's core is still slowly cooling. Is more of this heat lost through conduction through the earth's surface, or through hot material coming up through things like volcanoes?	6
How dense is our local part of the galaxy?	6
If the Oort Cloud were to double in density in half of the sky, or disappear completely, would we be able to see the difference?	3
When scientists talk about a "once in 1000 years" flood or storm, how large an area are they limiting that to?	3
At what rate does my brain consume energy (calories)? How much does that fluctuate if I'm doing something like math or reading a book or some other mental activity?	2
Order of magnitude: How many stars needed to explode to make enough heavy material to form the earth?	2