Carbon Dioxide and Climate Change
Scientist and climate change expert Michael Oppenheimer discusses research into the relationship between climate change and carbon dioxide, beginning with computer models in the late 1950's, through the analysis of ice cores over the subsequent thir...
Impact of Acid Rain and Climate Change on Ecosystems
Scientist and climate change expert Michael Oppenheimer talks about the consequences of acid rain in the lakes of southeast Canada and many states in the northeastern United States. "It leeches toxic metals, like aluminums, from the soils," Dr. Oppe...
Impact From Loss of Biological Diversity
Paul Ehrlich, best known for his work on population growth, observes that it's difficult to predict whether the loss of biological diversity will hit us suddenly and very hard, or if the effects will be played out more gradually.
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...
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 ...
Biosphere II
Paul Ehrlich, best known for his work on population growth, talks about Biosphere II and efforts to use technology to substitute for natural ecosystems (which he says are the most important part of our environment).
Environmental Solutions in the Future
Scientist and climate change expert Michael Oppenheimer talks about his vision of the future...a future in which electricity is produced by photo voltaic cells which don't yield any carbon dioxide, and hydrogen is combined with oxygen in fuel cells ...
Environmental Impact of Humans Over the Past Century, The
Paul Ehrlich, best known for his work on population growth, observes that during the past century, man has gone from being just one more animal inhabiting planet Earth, to dramatically and perhaps forever altering the environmental landscape of this...
Disappearing Species and the Endocrine System
Zoologist and World Wildlife Fund senior scientist Theo Colborn talks about the impact of environmental toxins on the endocrine systems of exposed animals. Dr. Colborn observes that some of the species being affected have been in existence for milli...
Dealing with Climate Change
Scientist and climate change expert Michael Oppenheimer expresses optimism about global efforts to come to grips with environmental problems.