The Tour de France is one of the most famous cycling races in the world.

The ocean contains structures larger than mountain ranges.

Antarctica is the windiest continent — wind speeds can exceed 200 mph.

The Silk Road connected Asia and Europe for centuries.

About 50% of marriages end in divorce in many developed countries.

The ocean contains structures larger than mountain ranges.

Countries with extremely high tax rates sometimes collect less revenue than countries with moderate tax rates.

Iceland runs almost entirely on geothermal and hydroelectric energy — it is one of the greenest countries on Earth.

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