(February 25, 2009) Jacques Bouchard posits that the only way to maintain or reduce current carbon dioxide emissions it to increase use of renewable and nuclear energy. He gives a comprehensive overview of France's nuclear development and innovation.

Brent Constanz, CEO of Calera Corporation, states that concrete is the most used product worldwide next to water and he suggests that we could safely, cheaply, and quickly store carbon dioxide in concrete. (February 18, 2009)

Jefferson Tester talks about the benefits and challenges of harnessing geothermal energy, and he asserts that it is a large resource that complements solar and wind energy and is both carbon free and scalable. (February 11, 2009)