1) Male seahorses are the ones who give birth to their offspring.

2) 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.

3) The world's first paper money was created in China over 1,000 years ago.

4) The musical "The Phantom of the Opera" has been running in London's West End since 1986, making it the longest-running musical in history.