Google have launched their third annual Science Fair for students aged 13-18

A booth at the Google Science Fair 2012

Source: Google Science Fair 2012

Billed as the largest online science competition in the world, the fair is open to individuals and teams of up to three. Prizes include $10,000 school grants, visits to CERN and the Galapagos Islands, and Google scholarships for the winners of $50,000.

Entrants are required to pose a question, develop a hypothesis and conduct scientific experiments to test it. The entire process is submitted online via a dedicated website. Questions asked by students in previous years include 'How can I cure cancer?', 'Can I teach a robot to learn English?' and 'Can I build a faster sailboat?'

Google say their aim is 'to champion young scientific talent and give students across the world an opportunity to showcase ambitious ideas.'

Deadline for entries is 30 April. Find out more on the Google Science Fair blog. [Link no longer available]