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The Last Day of the Dinosaurs

An incredible bit of scientific research explores moment by moment the asteroid that ended the reign of dinosaurs on earth. Lay persons article here: https://www.nationalgeographic.co.uk/science-and-technology/2019/09/last-day-dinosaurs-reign-captured-stunning-detail

and the academic journal article here:

https://www.pnas.org/content/early/2019/09/04/1909479116

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As I studied Einstein's thoughts on relativity, I found myself wondering, "what is the speed of thought?" There are several subtle mentions of this in the book (e.g., 14-40 milliseconds to get from br

Thanks to Ben Chappell for sending this link to a nice playlist from the Fermi Lab that helps explain relativity in simple lay-person terms: https://www.youtube.com/watch?v=Txv7V_nY2eg.

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