1) The Great Barrier Reef in Australia is the largest coral reef system in the world and is visible from space.

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

3) The fastest land animal is the cheetah, capable of reaching speeds up to 70 miles per hour (113 kilometers per hour) in short bursts.

4) A group of flamingos is called a "flamboyance."