1) The Cuban Missile Crisis in 1962 brought the United States and the Soviet Union to the brink of nuclear war during the Cold War.

2) The world's first insurance policy was issued in 1347 in Genoa, Italy. It insured against the risk of maritime trade.

3) The Great Barrier Reef in Australia is the largest living structure on Earth and can be seen from space.

4) The average person walks the equivalent of three times around the world in a lifetime.