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

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How does an artificial heart know when to beat faster or slower?

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A long time ago, I purchased 30 grams of 99.99% pure Gallium. I like to watch it melt in my hands. Is handling Gallium going to make me sick?

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How common are diamonds really?

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Lab Confessions: r/askscience what are some of your more ridiculous lab mishaps?

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When I look at the sky, I can't tell the difference between a planet and a star. How did people in ancient times figure it out?

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Can one attain a PhD in physics nowadays doing research in Newtonian physics?

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Are antibiotics really going to stop working? If so, is there a rough idea as to when? And then what?

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If Mendel's pea plants disproved gene mixing, why do certain traits like height or skin color appear to blend in humans?

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Plastic coke bottles (with minimal liquid residue) will, with the cap screwed on tight, develop a partial vacuum (negative pressure) inside over time. Why?

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If we were to build a bridge perfectly straight from the north pole, how long could we walk on for?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How does an artificial heart know when to beat faster or slower?	38
A long time ago, I purchased 30 grams of 99.99% pure Gallium. I like to watch it melt in my hands. Is handling Gallium going to make me sick?	38
How common are diamonds really?	38
Lab Confessions: r/askscience what are some of your more ridiculous lab mishaps?	38
When I look at the sky, I can't tell the difference between a planet and a star. How did people in ancient times figure it out?	38
Can one attain a PhD in physics nowadays doing research in Newtonian physics?	38
Are antibiotics really going to stop working? If so, is there a rough idea as to when? And then what?	38
If Mendel's pea plants disproved gene mixing, why do certain traits like height or skin color appear to blend in humans?	38
Plastic coke bottles (with minimal liquid residue) will, with the cap screwed on tight, develop a partial vacuum (negative pressure) inside over time. Why?	38
If we were to build a bridge perfectly straight from the north pole, how long could we walk on for?	38