Hal Harvey discusses the urgency of mitigating climate change as well as how to craft and implement approaches to the problem that achieve results, and the costs of delaying action. (June 2, 2010)

Johannes Lehmann discusses the characteristics of naturally occurring terra preta including its agricultural and carbon sequestering benefits and then turns to considering the factors involved with implementation industrial biochar systems.(May 19, 2010)

Gregory Jaczko provides an impartial overview of the current regulatory environment for the maintenance and construction of large-scale nuclear power facilities in the United States. (May 18, 2010)