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Farming practices in America's heartland, including excess fertilizers and poor soil conservation, have wrought unintended yet severe consequences on the Mississippi River. Fortunately, farmers, scientists, and citizens are pursuing more sustainable land-use practices that meet ambitious food production goals while ensuring the long-term health of precious natural resources.
Выпуск: Sep 23, 2010
Время выполнения: 57 минут
Язык: English
Студия: Bell Museum
Страна: United States of America
В ролях: Bob Malos