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

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Do astronauts on extended missions ever develop illnesses/head colds while on the job?

3515 upvotes

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Why do some vending machines instantly return (spit out) certain quarters although they are indiscernible from any other quarter?

1 upvotes

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Will blowing a dog whistle through a bullhorn make it louder to dogs?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Do astronauts on extended missions ever develop illnesses/head colds while on the job?	3515
Why do some vending machines instantly return (spit out) certain quarters although they are indiscernible from any other quarter?	1
Will blowing a dog whistle through a bullhorn make it louder to dogs?	1