Global Warming: Evidence and Impact
Scientist and climate change expert Michael Oppenheimer discusses the evidence confirming global warming and the expected impact, which he predicts will be enormous.
Ecology: Biosphere 2: A Laboratory for Studying the Future
While Biosphere 2's efforts to duplicate earth's complex ecological systems were unattainable, this scaled-down model is ideal for studying the effects of man on ecosystems. It is possible, for instance, to elevate carbon dioxide to the levels predi...
Ecology: Biosphere 2: Elevated Carbon Dioxide Levels
By overstocking the soil with organics, an excess of carbon dioxide production was created in Biosphere 2. The elevated levels of carbon dioxide affected the pH of the ocean water and the growth and productivity rates of plants. The greenhouse gases...
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...
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 ...
Dealing with Climate Change
Scientist and climate change expert Michael Oppenheimer expresses optimism about global efforts to come to grips with environmental problems.
Trees and Other Critical Resources
Former Sierra Club president David Brower talks about the value of critical resources, including trees, soil, water and rapidly disappearing species.
Dirty Water: Global Climate Change and Sea Level Rise
Many scientists are convinced that there is a connection between global climate change and the increase of carbon dioxide in the atmosphere. Those who believe that global warming is a real and serious problem often cite sea level rise as one reason ...
Dirty Water: Marine Absorption of Carbon Dioxide
Many scientists believe that the greenhouse gas problem would be far worse today if the ocean didn't absorb as much carbon dioxide as it does. Some in the scientific community are looking into the feasibility of increasing the amount of carbon dioxi...