New Zealand was the last major landmass to be settled by humans, around 1250 to 1300 AD.

The ocean contains structures larger than mountain ranges.

The Australian lyrebird has such a powerful voice it can be heard over a kilometer away.

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

The bubonic plague killed about one-third of Europe's population in the 14th century.

The Sahara Desert receives very little annual rainfall.

The city of Istanbul spans two continents — Europe and Asia.

A mountain goat can climb steep rocky cliffs with ease.

The Andes Mountains are still rising today.