/u/creddit_card's posts in /r/askscience

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Scenario: A brother and sister are the last two humans on Earth. Question: Would they eventually be able to successfully repopulate the Earth, without genetic defects?

283 upvotes

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Is is possible for a human to unknowingly get cancer and survive it by means of a superior immune system? Or would they just not get cancer in the first place?

65 upvotes

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What causes seemingly random places on our bodies to spontaniously itch? Does this have a biological purpose?

60 upvotes

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If a modern day automobile were sent back in time to 1885, would they be able to keep it functional for very long?

41 upvotes

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What is the difference between gravity and magnetism?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Scenario: A brother and sister are the last two humans on Earth. Question: Would they eventually be able to successfully repopulate the Earth, without genetic defects?	283
Is is possible for a human to unknowingly get cancer and survive it by means of a superior immune system? Or would they just not get cancer in the first place?	65
What causes seemingly random places on our bodies to spontaniously itch? Does this have a biological purpose?	60
If a modern day automobile were sent back in time to 1885, would they be able to keep it functional for very long?	41
What is the difference between gravity and magnetism?	1