Oldie, but a goodie. Come spend a couple minutes with Carl Sagan as he explains how Eratosthenes figured out the circumference of the earth and that it truly was a sphere!
The pacing is a little slower than we're used to these days, but it's a relaxing five or so minutes. Rebel against the attention economy for a moment this Friday and indulge yourself.
In retrospect, the proliferation of "flat earthers" in the years leading up to the pandemic should have been an indicator that Americans were extremely vulnerable to disinformation and easily disproved conspiracy theories.