Natural and enhanced greenhouse
| Most scientists agree: Earth is warming up. What has caused the slow rise in global temperatures? This movie looks at Swedish chemist Svante Arrhenius who first proposed the 'Greenhouse Effect' theory in the 1890's. Arrhenius observed that the rise of global warming appeared to be happening in tandem with increased burning of fossil fuels like coal and oil. |
Credit: "Our Changing Planet", Upper Midwest Aerospace Consortium
For more info: http://www.umac.org/ocp/global/