Population Series Part 3: We were joined by our guest cohost Dr. John Feeney and Dr. David Pimentel - one of the world's leading experts on the global food crisis and its relation to the human population and population growth. We talked in detail about issues such as food availability and it's distribution and the inefficiency of biofuels and how they fuel food shortages. We touched upon issues of the environment as species extinction, climate change, and malnutrition - topics which we will go into greater detail on in future segments of this series.

Listen to John and David:     Part 1 >>     Part 2 >>