Does sustainable investing make any difference?

Is corporate social responsibility, so called "greenwashing", really changing carbon emitting businesses or just making it look that way? Canadian businessman Tariq Fancy used to work as Blackrock's Chief Investment Officer for sustainable investing. He tells Ed Butler why he thinks CSR isn't a good enough tool to achieve a net zero economy.(Picture: Two climate activists from Extinction Rebellion talk to each other outside the Bank of England during a protest. Credit: Getty Images.).