The Atacama Desert in Chile is so dry that some weather stations there have never recorded rain.

Roughly 8 billion people currently live on Earth.

The Sahara Desert is roughly the same size as the continental United States.

The Great Rift Valley in Africa may eventually split the continent in two, forming a new ocean in millions of years.

The CN Tower in Toronto was once the tallest free-standing structure.

Lake Baikal is the deepest freshwater lake in the world.

The Nile is generally considered the world's longest river, but some measurements put the Amazon ahead depending on source point.

The Golden Gate Bridge was completed in 1937.

The highest navigable lake in the world is Lake Titicaca, shared between Peru and Bolivia at 12,507 feet.