The Sahara Desert stretches across northern Africa.

The Amazon River basin covers millions of square kilometers.

Fact #178 · Geography

The Sahara Desert is roughly the size of the United States.

Fact #154 · Geography

The Earth's mantle lies between the crust and core.

Fact #301 · Geography

Glacial periods caused sea levels to drop significantly.

Fact #748 · Geography

The first forests appeared during the Devonian period.

Fact #710 · Geography

The Earth's continents were once joined in a supercontinent called Pangaea.

Fact #229 · Geography

Around 90% of the world's population lives in the Northern Hemisphere.

Fact #2769 · Geography

There is more water in Earth's mantle than in all the oceans on the surface.

Fact #3594 · Geography