The 2011 Google Science Fair Answered
"Google is looking for the brightest, best young scientists from around the world to submit interesting, creative projects that are relevant to the world today."
"The competition is open to students aged 13 to 18 from around the world working on their own or in a team of two or three."
More information here: http://www.google.com/events/sciencefair/
Teachers Resources: http://www.google.com/events/sciencefair/teachers.html