In 1896, two countries fought a war that lasted under 45 minutes.

There is a town in Norway called Hell — it regularly freezes over in winter.

The ocean contains structures larger than mountain ranges.

The entire population of Earth in 1 AD was around 300 million — roughly equal to the current population of the United States.

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

The Pangaea supercontinent existed before breaking apart.

The Great Emu War of 1932 involved Australian soldiers attempting to reduce emu populations.

The Pentagon Papers revealed previously undisclosed details about U.S. involvement in Vietnam.

Mount Olympus on Mars stands about 13 miles high — nearly three times the height of Mount Everest.