Spiked and studded dog-collars derive from the days of the Ancient Greeks, who would give their sheep-dogs sharply spiked collars to protect their necks from wolves whilst they watched over a Sheppard's flock at night.

The human heart weighs less than a pound.

After the "Popeye" comic strip was launched in 1931, spinach consumption went up by thirty-three percent in the United States.

AMAZING FACTS