The US is the world’s biggest corn exporter – but for how long?

Scott Haerr, who harvests 4,000 acres of corn every year (an area nearly five-times the size of New York’s Central Park), is one. Inside a massive grain silo on his farm in western Ohio, the third-generation farmer examines corn kernels from last year’s harvest. “That’s some real good corn,” he says, sifting through a handful.