Imagine you are buying an apple in a supermarket. Which do you choose, one with a small brown mark, or one without? Be honest – you’d go for the apple which looks perfect. Supermarkets do this too, but on a much larger scale when buying fruit and vegetables from farmers. And what happens of the ones with marks on them? They are thrown away. So are the ones that are a funny shape or size. Another reason for waste is that people buy more food than they can eat and supermarkets do everything they can to encourage this, for example with offers like ‘Buy one, get one free’. Developed countries waste about 650 million tons of food each year and so do developing countries. However, the waste happens for very different reasons. As the world’s population grows, this problem will only worsen, so we need to take action urgently.