There is an alternative to English as the dominant World Language, and its name is Esperanto.
Esperanto is now within the top 100 languages, out of 6,800 worldwide, according to the CIA factbook. It is the 17th most used language in Wikipedia, and in use by Skype, Firefox and Facebook.
Native Esperanto speakers, include George Soros, Ulrich Brandenburg the new German Ambassador to NATO, and World Champion Chess Player, Susan Polger.
The World Esperanto Association enjoys consultative relations with both the United Nations and UNESCO.
Evidence can be seen at http://www.lernu.net
An interesting video can be seen at http://www.youtube.com/watch?v=_LV9XU