Food and climate expert Tara Garnett talks to CNN about carbon labeling . Garnett : Low carbon foods not answer ; we need to reduce `` high impact foods '' in diet . Garnett : We have a lot of food that is produced with fossil fuels, so it's important for us to look at the whole picture.
Food and climate expert Tara Garnett talks to CNN about carbon labeling . Garnett : Low carbon foods not answer ; we need to reduce `` high impact foods '' in diet . Garnett : Carbon labeling not always clear for consumers but good for manufacturers .