/u/[deleted]'s posts in /r/askscience

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Why does putting a little ball into a whistle make it really really loud?

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Can a human survive by eating human blood alone?

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If you traveled in a straight line in space, would you eventually end up back where you started?

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In case it hasn't been brought to your attention, there's a new subreddit, "Explain Like I'm Five" that might do well to have some of our scientists checking it out.

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Could low testosterone in men lead to depression/feelings of sadness?

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What is the most advanced artificial intelligence that we have created so far?

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My medical-resident wife once said, "I've taken enough microbiology to know that those things don't work," talking about public restroom toilet seat covers. What's the science here?

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What are the major breakthroughs made in dentistry over the last 20 years?

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I have read online that some fabrics have antimicrobial properties. Is this true? How does this work?

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Do wild animals change their behavior after near-death experiences?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why does putting a little ball into a whistle make it really really loud?	32
Can a human survive by eating human blood alone?	32
If you traveled in a straight line in space, would you eventually end up back where you started?	32
In case it hasn't been brought to your attention, there's a new subreddit, "Explain Like I'm Five" that might do well to have some of our scientists checking it out.	32
Could low testosterone in men lead to depression/feelings of sadness?	32
What is the most advanced artificial intelligence that we have created so far?	32
My medical-resident wife once said, "I've taken enough microbiology to know that those things don't work," talking about public restroom toilet seat covers. What's the science here?	32
What are the major breakthroughs made in dentistry over the last 20 years?	32
I have read online that some fabrics have antimicrobial properties. Is this true? How does this work?	32
Do wild animals change their behavior after near-death experiences?	32