Bananas are almost the perfect fruit, as they are colour coded to tell you if they’re ready to eat: Green, Yellow, Brown. However, I think that with a little genetic manipulation they could be even better: Bananas need to be re-engineered so that their colour code is more in line with our traffic lights. Yellow: almost ripe, Green: Ripe. Red/Brown: Stop – no good any more. Screw world hunger…. the person who solves this should get a nobel prize.