In this podcast episode, David and John interview Rob Cummings, the head of sustainability and public affairs at Lafarge Canada. The conversation covers Rob's role, Lafarge's efforts in decarbonization, public affairs, and the importance of governance in the cement industry. Rob shares examples of how the company is achieving significant reductions in carbon emissions and stresses the role of innovation, market systems, and rule changes in driving sustainability. The discussion also delves into biodiversity and how Lafarge aims to be net positive in biodiversity through quarry operations and restoration projects. Rob highlights the necessity for making sustainability profitable and the importance of good governance and accountability in achieving that goal.