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/r/askscience

When transplanting a heart to a patient of much lower cardiovascular fitness than the donor, could the blood vessels of the patient suffer?

1099 upvotes • shoobz
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Are black holes really a 3 dimensional sphere or is it more of a puck/2 d circle?

1099 upvotes • targetshooter
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Can cancer be transferred from host to host?

1099 upvotes • alextomato
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Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology

1098 upvotes • AutoModerator
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If I wanted to launch a satellite myself, what challenges, legal and scientific, am I up against?

1097 upvotes • TheMediaSays
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Do computer screens have a direct effect on our levels of melatonin?

1097 upvotes • MOX-News
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In 3-phase AC, what is the actual motion of electrons?

1097 upvotes • ten_mile_river
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Can you distinguish between male and female humans just by chromosome 1-22?

1097 upvotes • 926-139
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What level of culture did Neanderthals have?

1096 upvotes • zolltanzed
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How do fish heal underwater? Why don't they bleed to death? Also, are there less infections for underwater cuts?

1096 upvotes • CrazyBunnyLady
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