A fathom is 1,8 metres (6 feet).

Millk chocolate was invented by Daniel Peter, who sold the concept to his neighbor, Henri Nestle.

Do you know the names of the three wise monkeys? They are: Mizaru (See no evil), Mikazaru (Hear no evil), and Mazaru (Speak no evil).

An ounce of chocolate contains about 20 mg (milligrams) of caffeine.

An atomic clock is accurate to within 1 second in 1,7 million years.