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1. Climate Change -- the scientific debate

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Uploaded on Sep 21, 2008

A basic look at how climate scientists infer that man-made carbon gases are changing the climate, and how this view is contradicted by other climate scientists who are skeptics.
I am a former science correspondent with an interest in reporting the facts, not the media hype. My thanks to 9thgate for checking my script for errors.
Please note that the animation of a photon striking a carbon atom is not meant to be visually correct, it is simply an illustration of CO2 absorbing energy and re-emitting it at a different wavelength. Given the limitations I have in making animations I could not spend an inordinate amount of time making a visually "correct" image of a photon striking an electron which moves into a different orbital plane, and even if I tried it would never be visually correct because on a quantum scale such an illustration is impossible. But thanks to all those who wrote in. The narration that accompanies the illustration is correct.

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