The bonus episode of the Climate Rising features an episode of HBR’s Cold Call podcast featuring a discussion on ethanol, a biofuel with a complex history and an uncertain future. Host Brian Kenny is joined by Professor Gunnar Trumbull and Paula Kovarsky from Raízen. As Brazil's top producer of sugar and ethanol and the world's premier ethanol trader, Raízen is at the forefront of biofuel innovation. The conversation delves into Raízen’s cutting-edge work in biofuels, the strategic choices behind advancing second-generation ethanol, and how these efforts contribute to global decarbonization initiatives. Guest/Host: Brian Kenny, Chief Marketing and Communications Officer, Harvard Business School and host of Cold Call. Gunnar Trumbull, Phillip Caldwell Professor of Business Administration at Harvard Business School. Paula Kovarsky, Vice President of Strategy & Sustainability at Raízen For transcripts and other resources, visit climaterising.org Episode specific link