In Canada, by law, one out of every five songs on the radio must be sung by a Canadian.

The Sahara Desert stretches across northern Africa.

Sudan has more pyramids than any country in the world.

There are abandoned cities hidden around the world that were evacuated suddenly.

Canada has more lakes than every other country combined.

The Colosseum in Rome could hold between 50,000 and 80,000 spectators and had a retractable awning called the velarium.

Roughly 8 billion people currently live on Earth.

The Caspian Sea is the world's largest inland body of water and is classified as a lake despite its salt water.

The shortest commercial flight in the world operates between two Scottish islands — Westray to Papa Westray — lasting about 90 seconds.