1) 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.

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

3) The first graphical web browser, Mosaic, was released in 1993 and played a key role in popularizing the World Wide Web.

4) The highest-grossing concert tour of all time is U2's "360° Tour," which earned over $735 million in ticket sales.