Hong Kong has a population of over seven million people from all over the world. It’s one of the most diverse and interesting cities on the planet – unfortunately, it’s also one of the most polluted. An organization called Hong Kong Cleanup wanted to bring awareness to the growing litter problem, so they came up with an incredible idea. Employing Snapshot DNA Phenotyping technology, which uses DNA to produce detailed information about someone’s appearance, they created this video. **After watching it, you’ll think twice about littering again.**