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Video (01:24 minutes):
Explains the principle of the greenhouse effect and its importance for the Earth?s ecosystem.
The video starts with a brief introduction to the greenhouse gas carbon dioxide. A graphic then illustrates the functional principle of the greenhouse effect. Two things become clear: firstly, that life on Earth would not be possible without the greenhouse effect; secondly, that the human-induced greenhouse effect is having a harmful effect on the Earth. Carbon dioxide produced by humans is named as the cause of this harmful effect. The video ends on the following question for further study, "... and where does this additional CO2 come from?"
Information and ideas:
This video sequence can be followed, for example, by a detailed discussion of harmful greenhouse gases.
This video is an excerpt from the teaching DVD, "Das grüne Paradoxon - Warum die Erde wärmer wird".