29:12
Core biology: environmental sciences
In this program, the wonders of ecology and ecosystems revealed. A seminal moment in mankind's history occurred when, in 1949, Aldo Leopold announced the concept of a land ethic: "We are all part of the greater interconnected whole of plants animal...
22:08
Environmental issues and human impact
This video looks at urgent environmental concerns facing planet Earth and what people can do to repair the degradation humans have caused. Air and water pollution, the effects of pollution on health and the environment, deforestation and loss of wet...