There are 60,000 miles of blood vessels in a human body. Leonardo da Vinci could draw with one hand and write with the other one. In 1979 snow fell in the Sahara Desert. The Roman Emperor Caligula made his horse a senator. The Fourth Railway Bridge is a meter longer in summer than in winter.
Mayflies live for only a few hours after they hatch.
There are about 1,000 different words for 'camel' in arabic.