The Brooklyn Bridge was the world's longest suspension bridge when completed in 1883.

Mount Everest is not the closest point to space — that distinction belongs to Mount Chimborazo in Ecuador, due to Earth's equatorial bulge.

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

The Suez Canal significantly reduced travel time between Europe and Asia.

The Sahara Desert receives very little annual rainfall.

The longest cave system in the world is Mammoth Cave in Kentucky.

There are abandoned cities hidden around the world that were evacuated suddenly.

The Earth's crust is thinner beneath oceans.

The Mediterranean Sea connects Europe, Asia, and Africa.