/u/Eveverything's posts

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There is no Roman numeral for the number zero. How would a Roman mathematician answer the equation X minus X or V minus V? What about V minus X?

247 upvotes • r/AskHistorians

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Can liquid water exist on planets with extremely high gravity?

109 upvotes • r/askscience

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What portion of today's Jews have had ancestors who lived in ancient Israel?

64 upvotes • r/AskHistorians

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Are there solar systems of stars, where a supermassive star has a group of smaller stars revolving around it?

31 upvotes • r/askscience

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What do we know about the African lives of the slaves brought to the Americas?

27 upvotes • r/AskHistorians

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What effects did the American slave trade leave behind on the parts of Africa where the slaves came from?

23 upvotes • r/AskHistorians

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What are the raw ingredients of birth control pills?

18 upvotes • r/askscience

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What percentage of the world's population over the past 1000 years has been Christian? What % has been Muslim?

12 upvotes • r/AskHistorians

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How many people did the most infamous dictators personally kill?

11 upvotes • r/AskHistorians

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Why did life start up only once?

8 upvotes • r/askscience

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Title	Upvotes	Subreddit	Mark as read	Favorited	Rating	Add to a list
There is no Roman numeral for the number zero. How would a Roman mathematician answer the equation X minus X or V minus V? What about V minus X?	247	AskHistorians
Can liquid water exist on planets with extremely high gravity?	109	askscience
What portion of today's Jews have had ancestors who lived in ancient Israel?	64	AskHistorians
Are there solar systems of stars, where a supermassive star has a group of smaller stars revolving around it?	31	askscience
What do we know about the African lives of the slaves brought to the Americas?	27	AskHistorians
What effects did the American slave trade leave behind on the parts of Africa where the slaves came from?	23	AskHistorians
What are the raw ingredients of birth control pills?	18	askscience
What percentage of the world's population over the past 1000 years has been Christian? What % has been Muslim?	12	AskHistorians
How many people did the most infamous dictators personally kill?	11	AskHistorians
Why did life start up only once?	8	askscience