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Carl Sagan - Protons and Neutrons (Original Post) BootinUp 12 hrs ago OP
I majored in science, but I found this presentation to be very interesting. I don't ever remember anyone Martin68 12 hrs ago #1
Yep, my thoughts as well. BootinUp 12 hrs ago #2

Martin68

(27,395 posts)
1. I majored in science, but I found this presentation to be very interesting. I don't ever remember anyone
Thu Feb 19, 2026, 03:49 PM
12 hrs ago

presenting it this way. Makes you think, teaches something fundamental, and is done in an entirely engaging way.

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