The hidden environment cost of hamburgers.

Americans love hamburgers -- they eat about three burgers a week. But what are the hidden environmental costs?

See sources from the Center for Investigative Reporting. http://cironline.org/reports/hidden-costs-hamburgers-3701 Directed and produced by Carrie Ching, Reported by Sarah Terry-Cobo and Carrie Ching, Illustrated and animated by Arthur Jones. This animation is part of The Food for 9 Billion series, a yearlong look at the challenge of feeding the world at a time of social and environmental change. http://cironline.org/projects/food-9-billion