Three teenage boys from Britain have won a TeenTech Award for an invention beyond their years. The 13- and 14-year-olds came up with the idea for a condom that changes colors if it comes into contact with a sexually transmitted disease. Daanyaal Ali, Chirag Shah and Muaz Nawaz, students at the Isaac Newton Academy in London, won in the "Future of Health" category. They dubbed their invention the "S.T.Eye" -- a play on STI, or sexually transmitted infection.

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