These Are Informative, You Should Watch Them of the Day: Where Jeremiah Warren's brief (but comprehensive) history of the modern calendar leaves off, CGP Grey's (hopefully) definitive debunking of the 2012 doomsday myth picks up:

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POV of the Day: Jeremiah Warren (of Space Invaders IRL fame) straps a wide-angle camera to a bunch of fireworks and sends the suckers soaring into the sky.

[nerdcore.]

Earlier: Using fireworks