The Mekong River passes through six countries — China, Myanmar, Laos, Thailand, Cambodia, and Vietnam.

The Ring of Fire surrounds much of the Pacific Ocean.

Fact #814 · Geography

The Sahara Desert was once much greener than it is today.

Fact #20 · Geography

The shortest commercial flight in the world is between two Scottish islands — it lasts about 90 seconds.

Fact #3831 · Geography

Antarctica is the only continent with no native population and no permanent residents except researchers.

Fact #3994 · Geography

The Great Wall of China is not visible from space with the naked eye — it's too narrow relative to its length.

Fact #3961 · Geography

Australia is wider than the Moon.

Fact #3392 · Geography

Greenland is the world's largest island and is covered by an ice sheet containing 10% of the world's fresh water.

Fact #4274 · Geography

The Angel Falls in Venezuela is the world's highest uninterrupted waterfall at 3,212 feet.

Fact #3754 · Geography