Have you ever wondered how much your glass of orange juice contributes to global warming? Well, so did PepsiCo, the maker of Tropicana, the New York Times reported yesterday. Adding up the emissions from the growing, juicing, and shipping of Tropicana O.J., PepsiCo found that "3.75 pounds of carbon dioxide are emitted… for each half-gallon carton of orange juice."
Though there is some controversy about the implications of displaying carbon-footprint numbers on products, the act of determining those numbers can help clarify where emissions can be reduced: Now that PepsiCo has figured out Tropicana’s carbon emissions, the company is working to lessen that output. As the project’s manager said, “If you don’t measure it, you can’t improve it.”