A migrant farm worker from Mexico harvests organic zucchini while working at the Grant Family Farms on September 3, 2010 in Wellington, Colorado. The farm, the largest organic vegetable farm outside of California, hires some 250 immigrant workers during the peak harvest season. | John Moore/Getty Images

Organic Farming Could Feed the World, but Only If People Consume Less Meat

Organic farming has been promoted as good for health and the environment, but research suggests it could also meet global food demand under certain conditions.