By Ben Dube
Ben Dube is a researcher and farmer at Cerridwen Farm at Green Mountain College. Learn more about Green Mountain College’s research on energy and agriculture.
In the last 100 years, energy use in the U.S. food system has increased dramatically. On the other hand, labor and land needs per unit of food output have declined precipitously. The increase in land efficiency has not only resulted in more food, but less land dedicated to crops. This illustrates how there is a certain level of substitutability between land, labor, and energy. Increase one, and you can decrease the others, resulting in different trade-offs. Continue reading