Do You Know?

• A cave painting in South Aljazair, that made 8000 years ago, shows that Sahara Desert at past was once a grassfield.
• Stegosaur which weight is more than 3 tons, has a canary seed sized brain.
• In Bulgaria, shaking head from left to right means 'yes' and nodding means 'no'.
• Before the 19th century, feces and piss were thrown from the windows and many people defecated everywhere on the road without being embarassed. That made the shit touch the gown of the girls. So, they made the higheels.
• Can opener invented 40 years after the canned foods first made in 1811.