At present, there are almost 7 billion people on the planet. By 2050, the UN estimates that there could be over 9 billion. How are we going to feed all these people? Simple. Take advantage of the most plentiful food on the planet — insects! In this delightfully amusing TED talk, Marcel Dicke says that munching on tasty, low-calorie bugs could be an environmentally sustainable source of food. Hungry yet?