Richard Alley speaks about climate change and some of the opportunities we have to build a better future by using renewable energy sources and moving away from dependence on fossil fuels. His talk was part of the symposium put on by the Smithsonian Institution and the Club of Rome to celebrate the 40th anniversary of the Limits to Growth study.
Richard Alley is the Evan Pugh Professor of Geosciences and Associate of the Earth and Environmental Systems Institute at Pennsylvania State University.