History's Weirdest Facts

Ancient Romans used urine as mouthwash because it contained ammonia that whitened teeth.

Barbers collected it from public urinals and sold it as a dental product.

The Mayans filed their teeth into sharp points. And embedded jade stones into them

as a status symbol. Egyptian workers building the pyramids went on strike in

1152 BC. The first recorded labor strike in history, demanding their overdue

grain payments. The ancient Greeks used stones called pessoi as toilet paper.

Which were kept in public bathrooms for communal use. Vikings navigated foggy seas using sunstones.

Crystals that could locate the sun's position even through thick clouds by detecting polarized light.