Dogs have a remarkable sense of smell, they are capable of differentiating odors in concentrations nearly 100 million times lower than humans can.

The first theatre to show motion pictures was the Nickelodeon on June 19, 1905 in Pittsburgh, Pennsylvania. It was opened by Harry Davis on Smithfield Street.

The "lemon yellow" crayon was introduced in 1949 and retired in 1990.

AMAZING FACTS