The Lemon shark grows about 24,000 new teeth a year. A new set of teeth grow approximately every 14 days.

Coupons were introduced in 1894 when Asa Candler bought the Coca-Cola formula for $2,300 and gave people coupons that he had written out to receive a free glass of coke.

The Ice Man, found in the Italian Alps, is now thought to have been murdered. Scientists found an arrowhead stuck in the man's back. He is now known as the oldest murder victim on record.

AMAZING FACTS