/u/trackday's posts

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Before being visited by outsiders, did Eskimos know that the weather would be warmer if they went south? Likewise, did Central American cultures know that the weather was cooler if they went north or south?

450 upvotes • r/AskHistorians

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When did people first realize that boiled water was safer to drink?

154 upvotes • r/AskHistorians

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Isn't gravity just a side-effect of the bending of space by objects with mass?

23 upvotes • r/askscience

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Does a single photon propagate as if it were a thin shell of an expanding sphere? Or as a vector with a single direction?

7 upvotes • r/askscience

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Do we know the reasons that previous ice ages and warm periods reversed themselves?

1 upvotes • r/askscience

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Grammy winning actor in Hollywood likes to go to the grocery store in deep disguise, but one cashier always recognizes him/her. Tell us the surprise ending. [WP]

1 upvotes • r/WritingPrompts

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If a single photon is released, does light propagate in all directions, or just in one direction not visible from the side or behind?

1 upvotes • r/askscience

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If the genesis of live is a probable event, given the right conditions, shouldn't we be able to see evidence of multiple starts on the path to life?

1 upvotes • r/askscience

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What is my probability of existence?

1 upvotes • r/askscience

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Title	Upvotes	Subreddit	Mark as read	Favorited	Rating	Add to a list
Before being visited by outsiders, did Eskimos know that the weather would be warmer if they went south? Likewise, did Central American cultures know that the weather was cooler if they went north or south?	450	AskHistorians
When did people first realize that boiled water was safer to drink?	154	AskHistorians
Isn't gravity just a side-effect of the bending of space by objects with mass?	23	askscience
Does a single photon propagate as if it were a thin shell of an expanding sphere? Or as a vector with a single direction?	7	askscience
Do we know the reasons that previous ice ages and warm periods reversed themselves?	1	askscience
Grammy winning actor in Hollywood likes to go to the grocery store in deep disguise, but one cashier always recognizes him/her. Tell us the surprise ending. [WP]	1	WritingPrompts
If a single photon is released, does light propagate in all directions, or just in one direction not visible from the side or behind?	1	askscience
If the genesis of live is a probable event, given the right conditions, shouldn't we be able to see evidence of multiple starts on the path to life?	1	askscience
What is my probability of existence?	1	askscience