How do you know when an investment is truly “green”? Whether companies and fund managers monitor themselves or are externally policed, the correct rules need to be identified. And then it gets harder. Clearly defining and then measuring carbon footprints is a bigger challenge, explains Meredith Fowlie at UC Berkeley’s Energy Institute at Haas. She draws parallels with food nutrition labelling rules. But counting the calories in a food product can … [Read more...]