Sex differences in behavior are observed across cultures but differ in magnitude — cultural factors amplify or suppress them.

The Library of Alexandria may have held up to 700,000 scrolls before its destruction.

Particles can exist in multiple states until observed.

The oldest known martial art is wrestling, depicted in cave paintings in France dating to 15,000 BC.

Cultural traditions are often passed down through generations.

Traditional Japanese kabuki theater originally featured women actors — they were banned in 1629, and men have played female roles ever since.

Gymnastics has been part of the modern Olympics since 1896.

Particles can exist in multiple states until observed.

Shintoism, Japan's indigenous religion, venerates kami — spirits in nature, ancestors, and sacred objects.