/u/crowjr's posts

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Is there any evidence for prehistoric or pre-literate "empires"?

24 upvotes • r/AskHistorians

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[THEME] Why were so many major islands near the mainland colonized by non-Africans (most in recent times)? Why didn't Africans colonize those places prior to arrival of the Arabs, Indians, Europeans, or Austronesians?

20 upvotes • r/AskHistorians

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How 'unique' is Greek philosophy and learning (geometry, mathematics, science, medicine, etc.)? What evidence exists of borrowing from other cultures? Asked another way, how much of the Greek (Western) "portfolio" is novel?

12 upvotes • r/AskHistorians

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Assuming the sun was the same intensity over time, would you get the same sunburn from a 2 hour continuous exposure as you would if you were in the sun for 5 minutes at a time, but still 2hours cumulatively?

10 upvotes • r/askscience

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Why do some many rocket launch systems use a combination of solid boosters and liquid rockets?

9 upvotes • r/askscience

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Is there any evidence for a belief by Genghis Khan in cultural or martial continuity between himself and Attila?

5 upvotes • r/AskHistorians

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How long can a stable (non-radioactive) atom exist? Are they made of the same protons and neutrons as when they were created in a star?

5 upvotes • r/askscience

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Why do eggs, butter, and milk require refrigeration, but when combined and baked into bread, cake or cookies don't require refrigeration?

4 upvotes • r/askscience

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How does your stomach decide to burp or growl? Both events are a result of air in the stomach; why does it go further down the digestive tract sometimes (growl), and other times come back up (burp)? What is the mechanism that determines which way it goes?

1 upvotes • r/askscience

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If a supernova results from a star burning through it's fuel, then how did the solar system form from the remnants of a supernova?

1 upvotes • r/askscience

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Title	Upvotes	Subreddit	Mark as read	Favorited	Rating	Add to a list
Is there any evidence for prehistoric or pre-literate "empires"?	24	AskHistorians
[THEME] Why were so many major islands near the mainland colonized by non-Africans (most in recent times)? Why didn't Africans colonize those places prior to arrival of the Arabs, Indians, Europeans, or Austronesians?	20	AskHistorians
How 'unique' is Greek philosophy and learning (geometry, mathematics, science, medicine, etc.)? What evidence exists of borrowing from other cultures? Asked another way, how much of the Greek (Western) "portfolio" is novel?	12	AskHistorians
Assuming the sun was the same intensity over time, would you get the same sunburn from a 2 hour continuous exposure as you would if you were in the sun for 5 minutes at a time, but still 2hours cumulatively?	10	askscience
Why do some many rocket launch systems use a combination of solid boosters and liquid rockets?	9	askscience
Is there any evidence for a belief by Genghis Khan in cultural or martial continuity between himself and Attila?	5	AskHistorians
How long can a stable (non-radioactive) atom exist? Are they made of the same protons and neutrons as when they were created in a star?	5	askscience
Why do eggs, butter, and milk require refrigeration, but when combined and baked into bread, cake or cookies don't require refrigeration?	4	askscience
How does your stomach decide to burp or growl? Both events are a result of air in the stomach; why does it go further down the digestive tract sometimes (growl), and other times come back up (burp)? What is the mechanism that determines which way it goes?	1	askscience
If a supernova results from a star burning through it's fuel, then how did the solar system form from the remnants of a supernova?	1	askscience