Olympic weightlifters follow a precise diet and weigh in the day before competition to make their weight category.

In behavioral economics, choice architecture — how options are presented — dramatically affects decisions.

The Magna Carta was signed in 1215.

Particles can exist in multiple states until observed.

The Olympic rings represent the five continents of the world — but no particular ring is tied to a specific continent.

The Reformation reshaped religious life across Europe.

Competitive art used to be an Olympic sport.

Norse mythology predicted the end of the world in a cataclysmic battle called Ragnarök.

Music exists in every known human culture.