What's even better is that 45% of the production is for ethanol. Almost all of this is used for blending with gasoline in vehicles. A massive transition toward electric vehicles and public transit would eliminate the need for this. So 45% of the land used for corn production is not needed.

Irrigating corn improves its yield by up to 70% in many regions of the corn belt. Investment into irrigations systems could decrease the land area needed for raising corn by another 50-60%.

Bottom line: We really don't need to farm 60 million or so acres in corn we currently do in the U.S out of the 80-90 million averages.