What is something that reduces food waste, contributes 15% to 20% of the food worldwide, recycles nutrients, and is complementary to rural agriculture? Urban agriculture. That’s right: food that we grow in the city. Peri-urban agriculture (food grown in areas around the city) is also part of this practice. Collectively, urban and peri-urban agriculture (UPA) can potentially feed 20 million people in megacities by 2020.