I don't know that anyone pays attention to this anymore but I thought I would add something that caught my eye.
Check out this article. http://www.nature.com/news/2005/050502/full/050502-8.html
Apparently, the trend of using cleaner fuels and reducing the amount of pollution in the atmosphere has worked. The skies are much cleaner than they used to be. But more sunlight reaching the earth's surface may increase the likelihood of global warming. Seems like we just can't win.
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Umm...clean air doesn't really have all that much to do with global warming. Global warming mainly deals with the cutting down of rainforests and other natural areas to create farmland or whatever.
We were just talking about this in botany. Plants have a way of cooling the area around them. For instance, I'm sure you remember as a kid how extremely hot the sidewalk can get in the summer. And if you jumped onto the grass the ground was not nearly as warm even though the grass is a darker color. Plants are constantly losing water vapor from little pores called stomata and taking in carbon dioxide. CO2 absorbs heat. So the mixture of less CO2 and the giving off of water vapor makes the area around plants a bit cooler than an area without plants. By changing the landscape; cutting down forests, plowing fields, etc., the climate of that area can be changed. Especially in an area such as a rain forest where temperatures are extremely warm. The idea of global warming comes from cutting down large quantities of natural areas so that this cooling effect would no longer take place.
Whoever you were talking with about global warming must have had their information wrong.
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