The Amazon River discharges more water into the ocean than the next seven largest rivers combined.

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

The Andes Mountains stretch along South America's western coast.

The Ganges Delta is the world's largest river delta, covering over 100,000 square kilometers.

The Pacific Ring of Fire contains many of the world's active volcanoes.

The longest river in the world is often considered to be the Nile.

Venice, Italy is built on 118 small islands connected by over 400 bridges and is slowly sinking.

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.