I assume you are being serious here. We have more than enough crops to feed ourselves (and a good deal of the third world) already. The problem is that most of those crops are being fed to livestock, and the yield is terribly inefficient. 60% of the world's crops and 70% of soy are fed to industry-bred animals. Trophic law means that roughly 10% of energy is converted from one organism level to another. We are feeding livestock at least 10 times the amount of food than we acquire upon their slaughter.