1) The eye of a cyclone is a region of calm, relatively clear skies and light winds at the center of the storm.

2) The first commercially successful video game was "Pong," released in 1972 by Atari.

3) The world's largest species of shark, the whale shark, can reach lengths of up to 40 feet (12 meters) and weigh over 20 tons.

4) The Sahara Desert, located in North Africa, is the largest hot desert in the world, covering an area of about 9.2 million square kilometers (3.6 million square miles). It is characterized by vast stretches of sand dunes, rocky plateaus, and extreme temperatures.