The Earth's crust is divided into tectonic plates.

Russia is so large it spans 11 time zones.

The Nile River flows northward into the Mediterranean Sea.

There are caves on Earth so deep they have their own weather systems.

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

The Golden Gate Bridge spans the entrance to San Francisco Bay.

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

The border between Belgium and the Netherlands runs through a bar in the town of Baarle-Hertog.

The Erie Canal connected the Great Lakes to the Atlantic Ocean.