Happy birthday, Internet!

NobodyExpects writes: I'd like to wish a happy birthday to the Internet! Today marks it's 40th birthday! In fall 1969, computers sending data between two California universities set the stage for the Internet, which became a household word in the 1990s. On September 2nd 1969, in a lab at the University of California, Los Angeles, two computers passed test data through a 15-foot gray cable. Stanford Research Institute joined the fledging ARPANET network a month later; UC Santa Barbara and the University of Utah joined by year's end, and the internet was born.