/r/askscience

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If insects like the Prey Mantis have thousands of eyes, then why do they have pupils?

3457 upvotes • Luke-HW

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Why is it that the moons gravity is able to direct masses of water in different directions but yet we, ourselves cannot physically feel the affect of the moon's gravity?

3455 upvotes • MediocrePlayer

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How exactly does a autotldr-bot work?

3454 upvotes • Jirkajua

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Did scientists know that nuclear explosions would produce mushroom clouds before the first one was set off?

3453 upvotes • ShouldntWasteTime

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How wide can a straw be before holding water in there with your thumb fails?

3452 upvotes • mmm_toasty

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AskScience AMA Series: We invented a better version of CRISPR. Ask us anything!

3452 upvotes • AskScienceModerator

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AskScience AMA Series: My name is Pascal Lee, and I am a planetary scientist at the SETI Institute and director of the NASA Haughton-Mars Project (HMP) at NASA Ames Research Center. AMA!

3451 upvotes • AskScienceModerator

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When a napkin is dipped in water, where does the energy come from that allows the water to travel up the napkin, against gravity?

3449 upvotes • RonniePudding

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How does exposure to radioactivity affect the human body? In biological terms, what's the deadly process?

3449 upvotes • EquationTAKEN

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AskScience AMA Series: I'm Lawrence Krauss, Chair of the Board of Sponsors of the Bulletin of the Atomic Scientists, ask me anything!

3449 upvotes • AskScienceModerator

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
If insects like the Prey Mantis have thousands of eyes, then why do they have pupils?	3457	Luke-HW
Why is it that the moons gravity is able to direct masses of water in different directions but yet we, ourselves cannot physically feel the affect of the moon's gravity?	3455	MediocrePlayer
How exactly does a autotldr-bot work?	3454	Jirkajua
Did scientists know that nuclear explosions would produce mushroom clouds before the first one was set off?	3453	ShouldntWasteTime
How wide can a straw be before holding water in there with your thumb fails?	3452	mmm_toasty
AskScience AMA Series: We invented a better version of CRISPR. Ask us anything!	3452	AskScienceModerator
AskScience AMA Series: My name is Pascal Lee, and I am a planetary scientist at the SETI Institute and director of the NASA Haughton-Mars Project (HMP) at NASA Ames Research Center. AMA!	3451	AskScienceModerator
When a napkin is dipped in water, where does the energy come from that allows the water to travel up the napkin, against gravity?	3449	RonniePudding
How does exposure to radioactivity affect the human body? In biological terms, what's the deadly process?	3449	EquationTAKEN
AskScience AMA Series: I'm Lawrence Krauss, Chair of the Board of Sponsors of the Bulletin of the Atomic Scientists, ask me anything!	3449	AskScienceModerator