1) The strongest natural material known to man is spider silk. It is stronger than steel and more flexible than nylon.

2) The Tony Awards celebrate excellence in Broadway theater and have been awarded annually since 1947.

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

4) The world's largest desert is the Sahara Desert in Africa, covering an area of about 3.6 million square miles (9.4 million square kilometers).