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

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Do astronauts take their bodily waste back to earth?

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What is the most asymmetric animal?

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Question on babies, bright loud toys, and evolution.

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How do we know how far away a star is?

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Is it true that the North Sea and the Baltic Sea have a "border"?

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When an animals (such as a cat) pupils widen when they are stalking prey, what changes actually happens to their vision?

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Why is there a breathalizer test for alcohol levels but there isnt one for any other drugs? Do other drugs not escape through the lungs like alcohol, and why does alcohol exit the lungs?

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Why was Caesium picked to define the second on?

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Has there ever been an equivalent of the Manhattan Project or 60's Space Program, in the realm of medical technology?

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I've learnt that bacteria can become spores and preserve themselves for thousands of years, but how do they survive if DNA has a half-life of 521 years?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Do astronauts take their bodily waste back to earth?	55
What is the most asymmetric animal?	55
Question on babies, bright loud toys, and evolution.	55
How do we know how far away a star is?	55
Is it true that the North Sea and the Baltic Sea have a "border"?	55
When an animals (such as a cat) pupils widen when they are stalking prey, what changes actually happens to their vision?	55
Why is there a breathalizer test for alcohol levels but there isnt one for any other drugs? Do other drugs not escape through the lungs like alcohol, and why does alcohol exit the lungs?	55
Why was Caesium picked to define the second on?	55
Has there ever been an equivalent of the Manhattan Project or 60's Space Program, in the realm of medical technology?	55
I've learnt that bacteria can become spores and preserve themselves for thousands of years, but how do they survive if DNA has a half-life of 521 years?	55