Cultural traditions are often passed down through generations.

The Large Hadron Collider is the world's largest particle accelerator.

The Mona Lisa was considered an unremarkable painting until it was stolen in 1911 — the resulting publicity made it famous.

The Global Seed Vault in Svalbard, Norway, holds over 1.3 million seed samples as a backup for global agriculture.

High jumpers use the Fosbury Flop — jumping backwards over the bar — introduced by Dick Fosbury at the 1968 Olympics.

Particles can exist in multiple states until observed.

People are more likely to comply with requests from authority figures.

Photography was originally called 'sun painting' — the word comes from Greek for 'light writing.'

Roman gladiatorial games were often less lethal than popular culture suggests — gladiators were expensive to train.