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

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Do freezing pipes only burst when they are closed on all ends, or do they also burst if faucets are left open?

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Research seems to suggest that a natural Covid infection confers no better protection than a vaccination. However, there's all this news about nasal spray vaccination that supposedly will lead to better protection. Is that not something you would get from a natural infection?

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Young birds spend a lot of time in the nest being fed by their parents. Why aren't the nests full of bird poop?

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To my understanding, the reason why indoor air in winter is so dry is because when heated up, the relative humidity decreases because air's capacity to hold moisture increases. Does that mean people wouldn't have dry skin if they didn't heat the place?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Do freezing pipes only burst when they are closed on all ends, or do they also burst if faucets are left open?	1
Research seems to suggest that a natural Covid infection confers no better protection than a vaccination. However, there's all this news about nasal spray vaccination that supposedly will lead to better protection. Is that not something you would get from a natural infection?	1
Young birds spend a lot of time in the nest being fed by their parents. Why aren't the nests full of bird poop?	1
To my understanding, the reason why indoor air in winter is so dry is because when heated up, the relative humidity decreases because air's capacity to hold moisture increases. Does that mean people wouldn't have dry skin if they didn't heat the place?	1