01:41
Natural Ecosystem Services and the Economy
Paul Ehrlich, best known for his work on population growth, talks about the critical links between Earth's natural ecosystems and what he calls the "human economy." If we did not have properly functioning natural ecosystems, Dr. Ehrlich argues, we w...
01:26
Natural Ecosystem Services and Waste Disposal
Paul Ehrlich, best known for his work on population growth, observes that there's no way to truly "throw things away," because everything remains on this planet. According to Dr. Ehrlich, we must depend on natural systems functioning properly if we ...