Trucks haul spinach into frozen food processing plant in Princeton, New Jersey (NJ). Trucks drive into vegetable processing factory. Men shovel large bins of produce with pitchforks. Vegetables on assembly line. Waste water flows down grates and storm drains into river. Scientist tests waste water quality. Quick shot of graphing machine. Water in canal goes through pumping stations and irrigates local farms. Barren farm fields. Irrigation pipes, sprinklers in forest. Pollution problem solved!