1) The first successful consumer digital camera, the Apple QuickTake 100, was released in 1994 and had a resolution of 640 x 480 pixels.

2) The word "telephone" contains five vowels: E, E, O, E, and E.

3) 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.

4) The first successful human heart transplant was performed by Dr. Christiaan Barnard in 1967.