You hear about world hunger all the time. You feel pity for those starving people, yet you still go on eating meat. Why is this relevant? Well, a meat-based diet uses two time more land than is necessary for vegetarian diet. High quality land is use to grow grains and soya beans for animal feed-land that could be used to grow crops for humans. If we stop eating so much meat, less livestock will be raised, and we could just eat the grains that are used to raise animals.