Agriculture today is extraordinarily productive, although sadly many people are chronically hungry, malnourished or obese. And the way we farm also takes an increasing toll on the environment. Farming emits a third of all greenhouse gases and uses 70 percent of freshwater resources. It is a major contributor to deforestation and biodiversity loss, and has led to the loss of soil fertility in agricultural lands. How can we produce enough food for the future while protecting the planet? Berkeley conservation biologist Claire Kremen suggests practices that can maintain productivity while using less energy, water and pesticides. Series: "Cal Future Forum: Our Changing World" [Show ID: 33077]