The last time American Green cards were actually green was 1964.
60
Napoleon constructed his battle plans in a sandbox.
573
The World Trade Center towers used to have two zip codes, 10047-10048, one for each building.
77
Early American humans hunted car-size armadillos and used their shells for houses.
12
Genghis Khan exempted the poor and clergy from taxes, encouraged literacy, and established free religion, leading many peoples to join his empire before they were even conquered.
28
The flushing toilet was invented in 1596, not by Thomas Crapper as most people think, but by Sir John Harington.
98