Students from the Isaac Newton Academy in Illford dreamt up the idea for a condom that glows green if it detects chlamydia and yellow if it finds herpes as an entry to this year's TeenTech Awards.

Read the full story:

http://www.dailymail.co.uk/sciencetech/article-3135833/Glowing-condoms-soon-reveal-STI-Students-design-smart-contraceptive-detect-disease.html

Also watch a video of Buzz60:

P.S.  "an STD" why use "an" because the S starts with an "e" vowel sound