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

2) The world's oldest known living tree is a bristlecone pine named "Methuselah" in California, estimated to be over 4,800 years old.

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

4) Lightning strikes the Earth about 8 million times a day.