/r/askscience

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Is it possible for 2 total strangers be more genetically similar than 2 siblings?

2302 upvotes • surprisepuppyart

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Do COVID-19 vaccines prevent Long COVID?

2302 upvotes • am9qb3JlZmVyZW5jZQ

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The Mars rover found that Martian soil is composed of about 2% water. How significant is this number? What about compared to the Sahara? What else should we expect after finding this water on Mars?

2301 upvotes • surreal-reality

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Could a well developed sense of humor just be a survival mechanism developed to cope with depression?

2298 upvotes • longfoot

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If there are two identical rockets in vacuum, one stationary and one somehow already moving at 1000kmh, and their identical engines are both ignited, would they have the same change in velocity?

2298 upvotes • dmbss

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Why are there so few large flying animals today?

2296 upvotes • kenmaclean

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What determines the altitude "sweet spot" that long distance planes fly at?

2296 upvotes • Chasen101

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In Japan, it is common for people with cold infections to wear surgical masks in public. Does this affect the rate of infection in Japan? If so, why does no government elsewhere promote them?

2295 upvotes • brainburger

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Why is fish different than other meat?

2295 upvotes • [deleted]

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Could science ever truly bring back an extinct species, such as the Tasmanian tiger or similar? If so, why hasn't it been done yet?

2295 upvotes • TRA5IMENE

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Is it possible for 2 total strangers be more genetically similar than 2 siblings?	2302	surprisepuppyart
Do COVID-19 vaccines prevent Long COVID?	2302	am9qb3JlZmVyZW5jZQ
The Mars rover found that Martian soil is composed of about 2% water. How significant is this number? What about compared to the Sahara? What else should we expect after finding this water on Mars?	2301	surreal-reality
Could a well developed sense of humor just be a survival mechanism developed to cope with depression?	2298	longfoot
If there are two identical rockets in vacuum, one stationary and one somehow already moving at 1000kmh, and their identical engines are both ignited, would they have the same change in velocity?	2298	dmbss
Why are there so few large flying animals today?	2296	kenmaclean
What determines the altitude "sweet spot" that long distance planes fly at?	2296	Chasen101
In Japan, it is common for people with cold infections to wear surgical masks in public. Does this affect the rate of infection in Japan? If so, why does no government elsewhere promote them?	2295	brainburger
Why is fish different than other meat?	2295	[deleted]
Could science ever truly bring back an extinct species, such as the Tasmanian tiger or similar? If so, why hasn't it been done yet?	2295	TRA5IMENE