Garnett : Food and climate activist Tara Smith spoke to CNN about carbon labels . Garnett : Low impact foods not answer ; we need to reduce ` ` high impact foods '' in diet . Garnett : Carbon labeling not always clear for consumers but good for manufacturers .
Food and climate activist Tara Smith spoke to CNN about carbon labels . Garnett : Low impact foods not answer ; we need to reduce ` ` high impact foods '' in diet . Garnett : Carbon labeling not always clear for consumers but good for manufacturers .