How do you solve a problem like agriculture?

Forty percent of the Earth's surface is devoted to agriculture. The Colorado River, tapped for irrigation, no longer flows into the ocean. Agriculture also makes up 30% of all human-created greenhouse gas emissions—more than electricity, more than transportation.

Agriculture matters. And it's not an option, but a necessity.

In this talk for TEDxTwinCities, University of Minnesota scientist Jon Foley talks about the challenges facing the future of food. How do we produce more food without consuming more land, water, and fossil fuels? The only solution, according to Foley, is a combination of things. Not just "go organic". Instead, he's advocating combining some organic practices with industrial efficiency, changed diets, new varieties of food crops, and more.

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