[Update: I'm bumping this to the top for a day. The actual day of adoption was 2/21/1957. The gallery on the birthday site is now loaded with lots of inspiring and/or fun images from peacemakers, artists and even celebrities. Take a look.]
The world's most famous symbol of peace turns 50 in 2008 and its birth and life are being celebrated with a book and a web site where users can upload their own peace-themed art, videos and talk about it all on a message board.
The book, which will include some of the contributions, comes out in March, but can be pre-ordered. It will tell how the symbol has been used since it was designed as the logo for the Campaign for Nuclear Disarmament in England — it was never copyrighted, so the subsequent usage was legal and encouraged.
* 1957-1960 Ban The Bomb