From the perfect green circles visible from space to ancient flood canals still running today, American agriculture runs on water — and the systems that move it are more fascinating than most people realize. This video breaks down every major irrigation method used on farms across the United States: center pivots that turn square fields into circles, drip lines that deliver water one drop at a time, furrow irrigation that hasn't changed in 6,000 years, and dryland farming that uses no irrigation at all. How each system works, why farmers choose one over another, and what each one costs in water, labor, and land. Eight systems. One video. Everything you never knew you wanted to know about how crops actually get watered.
