58:05
Global warming : science and solutions: the science of global warming
We cannot predict the consequences of global warming without clearly understanding “how” and “why” global warming is occurring. This program takes you through the complexities and science of our atmosphere, the numerous biogeochemical cycles...
21:34
Interdependence of life
On planet Earth, no living thing is an island. This video identifies the world's ecosystems as it explains the flow of energy and the cycling of matter within them. Terms such as biosphere and biome, biotic and abiotic, autotrophs (producers) and he...