A group of 285 large investors, representing more than $20 trillion in assets, urged world governments to forge a binding treaty at upcoming climate negotiations in Durban, South Africa, and said global spending has not been nearly enough to keep warming below 2 degrees Celsius.

The call came from a coalition of four green investment groups—representing the investment arms of banks HSBC and BNP Paribas, as well as of fashion company Hermes and the United Nations Environment Programme—aimed at limiting emissions and taxing them, arguing it will drive innovation, attract investment and create jobs. The call also hailed Australia’s recent move toward a carbon tax, saying it will be a boon for investors.

Meanwhile,