Seven of the world’s ten largest economies have put a price on carbon. How can business and regulators work together to foster vibrant carbon markets? Joining CNBC Africa for a discussion on this are panellist, Jose Manuel Entrecanales Domecq, Chairman and Chief Executive Officer, Acciona, Spain; Catherine McKenna, Minister of Environment and Climate Change of Canada; Douglas L. Peterson, President and Chief Executive Officer, S&P Global, USA; Lord Stern, President, British Academy, United Kingdom and Eric Olsen, Chief Executive Officer, LafargeHolcim, Switzerland.