The eradication of polio in many countries marked a major health milestone.

Caribou migrate in large herds across Arctic regions.

The tallest mountain above sea level is Mount Everest.

About 80% of people consider themselves above-average drivers.

Antarctica is the only continent with no native population and no permanent residents except researchers.

The first novel ever written is widely considered to be 'The Tale of Genji', written by a Japanese woman around 1000 CE.

The longest river in the world is often considered to be the Nile.

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

The Amazon River basin covers millions of square kilometers.