The Alaska Purchase in 1867 added territory to the United States.

The ocean contains structures larger than mountain ranges.

Fact #2185 · Geography

Countries with extremely high tax rates sometimes collect less revenue than countries with moderate tax rates.

Fact #2603 · Geography

The world's deepest lake is Lake Baikal in Russia, containing 20% of the world's unfrozen fresh water.

Fact #3401 · Geography

The Earth's rotation slightly bulges at the equator.

Fact #325 · Geography

Greenland is the world's largest island — Australia is considered a continent.

Fact #3402 · Geography

In 1932, Australia deployed machine guns against flocks of emus during the Emu War.

Fact #780 · Geography

The Earth's crust varies in thickness beneath continents and oceans.

Fact #240 · Geography

There are lakes beneath Antarctica’s ice.

Fact #2643 · Geography