Help support videos like this:
**CGPGrey T-Shirts for sale!**:
Go read The Diamond Age: It’s pretty great.

SciShow on the Mayan Calendar:

The National Geographic Style Guide on Maya vs Mayan:

The Sun Stone:

Music is from:

If you would like to help me make more videos please join the discussion on:




Or suggest ideas and vote on other peoples’ ideas at by blog: