CGP Grey explains why European diseases devastated the Americas while few deadly diseases traveled the other way. He ties it to livestock domestication, dense cities, and the ideas of Guns, Germs and Steel.

Why Hacker News readers recommend it: HN commenters point to it as a clear, short explanation of one-directional disease spread and the core argument of Guns, Germs, and Steel.

“I think CGP Grey does a great job at communicating the actual meat of Guns, Germs, and Steel here”

View the original HN discussion

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