In many places around the world, grocery store produce aisles are a delightful array of colors, even in the depths of winter, when it feels like not much could grow outside.
But this year-round variety has a real cost on the planet, with a new study finding that 'food miles' account for 19 percent of all food emissions – three times more than previously thought.Even worse, with only 12.5 percent of the world's population, high income countries generate 46 percent of the world's food-mile emissions.
The results are not exactly comforting. Food transport alone contributes 3 gigatonnes of emissions annually – equivalent to 19 percent of all food-related emissions, including land use. "We tend to interpret information around us in simplistic terms, like 'meat is bad and vegetables are good' but we wanted a much more comprehensive picture," University of Sydney nutritional ecologist David Raubenheime"Our study shows that in addition to shifting towards a plant-based diet, eating locally is ideal, especially in affluent countries,"The researchers suggest that in this case, consumers have the most chance of causing widespread change.
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