The Google Science Fair began in 2011 as a way to spur a love of science among teens and, just possibly, spark a few breakthroughs for science as a whole. It's back for a third year, and there's big improvements to both the competition's technology and rewards. The 2013 Fair will have Google+ Hangouts on Air for help and motivation, as well as to introduce us to the 15 finalists during the vote for a public-chosen award in August. The early talks will include Segway pioneer Dean Kamen and sea explorer Fabien Cousteau, among others. Finalists once again get prizes from Google itself, Lego, National Geographic and Scientific American, but there's extra bonuses this year for the grand prize winner: along with the $50,000 scholarship, Galapagos Islands trip and other individual gifts, the winner's school will get both $10,000 and a Hangout session with CERN. Young inventors have until the end of April 30th to submit their projects, and we'll learn about the very cream of the crop on September 23rd.