The Tower of London has served as a royal palace, prison, armory, and mint over its 1,000-year history.

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

Fact #3401 · Geography

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

Fact #100 · Geography

Russia spans 11 time zones — more than any other country.

Fact #3590 · Geography

Roughly 8 billion people currently live on Earth.

Fact #3086 · Geography

The coldest temperature recorded on Earth occurred in Antarctica.

Fact #911 · Geography

China and India together contain over one-third of humanity.

Fact #3094 · Geography

The Earth's crust is thinner beneath oceans.

Fact #264 · Geography

The United States has no official language — English is the dominant language but is not legally designated.

Fact #3918 · Geography