1) The oldest known musical instrument is a flute made from a bird bone, estimated to be around 43,000 years old.

2) The world's largest diamond, the Cullinan, was discovered in South Africa in 1905 and weighed over 3,000 carats.

3) The world's first car radio was invented in 1929.

4) The destructive power of cyclones is often attributed to their storm surge, which is a rise in sea level caused by the strong winds and low atmospheric pressure.