Crossing Indiana twice in our travels, I was introduced to a scene I’d not seen before in America: miles and miles of wind turbines turning slowly above the cornfields of the heartland, churning out energy.

Shooting video while zipping past at 55 mph with the car windows down, here’s what energy production looks like in America’s Midwest.

I don’t know if the corn below them was destined for cattle feed, cornbread, popcorn, or ethanol, but it brought home the future of sustainable energy: captured above, grown below.