The environmental costs of corn: should the US change how it grows its dominant crop?

Amid concerns over greenhouse gas emissions, the Trump administration has abolished climate-friendly farming incentives

This article was produced in partnership with Floodlight

For decades, corn has reigned over American agriculture. It sprawls across 90m acres - about the size of Montana - and goes into everything from livestock feed and processed foods to the ethanol blended into most of the nation's gasoline.