/u/paleselan1's posts in /r/askscience

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After you get a second/third COVID vaccine, people have symptoms because it is part of the immune response. Why doesn't that happen when you're actually exposed to COVID after vaccination? Why doesn't that immune response cause symptoms?

3936 upvotes

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The Vyvanse patent expires this year. How long does it usually take generic alternatives to get approved, and how much of a reduction in cost is expected on average?

817 upvotes

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If there were a mass extinction, and 90% of species died off (including humans), would intelligent life evolve again?

1 upvotes

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WM says that one dirty bottle can contaminate thousands of pounds of recyclable material. How true is this?

1 upvotes

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Scientists say there are millions of species still to be found, including 80% of all invertebrate species. Where are they hiding? Why haven't we found them? How is this possible?

1 upvotes

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Could our Big Bang (and our known universe) simply be local? Could another Big Bang occur a trillion light years away, theoretically?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
After you get a second/third COVID vaccine, people have symptoms because it is part of the immune response. Why doesn't that happen when you're actually exposed to COVID after vaccination? Why doesn't that immune response cause symptoms?	3936
The Vyvanse patent expires this year. How long does it usually take generic alternatives to get approved, and how much of a reduction in cost is expected on average?	817
If there were a mass extinction, and 90% of species died off (including humans), would intelligent life evolve again?	1
WM says that one dirty bottle can contaminate thousands of pounds of recyclable material. How true is this?	1
Scientists say there are millions of species still to be found, including 80% of all invertebrate species. Where are they hiding? Why haven't we found them? How is this possible?	1
Could our Big Bang (and our known universe) simply be local? Could another Big Bang occur a trillion light years away, theoretically?	1