The Tour de France covers approximately 3,500 km over 21 stages and is widely considered the hardest endurance race in sport.

Shamanism — the practice of entering altered states to interact with spiritual worlds — is found on every inhabited continent.

Chocolate was once used as currency by the ancient Aztecs.

Social norms influence everyday behavior.

There's a statue of Jason Voorhees, the “Friday the 13th” serial killer, chained to the bottom of a Minnesota lake.

About 80% of people say trust is the most important part of a relationship.

The Vedas, sacred Hindu scriptures, were composed orally for centuries before being written down.

Islam has five pillars: faith, prayer five times daily, charitable giving, fasting during Ramadan, and pilgrimage to Mecca.

Most people will earn over $1 million total during their lifetime.