The only thing to fear is fear itself. Don't be afraid, when I was very young I used to fear being blown up by an atomic bomb. It didn't happen, (I'm not sure it was by luck, divine intervention or human good sense, and I guess we could still be blown up by a nuclear bomb), but the fear was useless. If global warming is going to affect this planet adversely, or make us uncomfortable, or cause famines, then we should be looking for ways to deal with more heat than that we are accustomed. I personnally am not sure we can change it, stop it or anything, I think the sun is causing the earth to warm a little. I think it will sometime, cool, again....I would truely love to be able to grow a fuschia in my back yard, or a camilia, so for me, a little more heat is OK, but its probably not going to get high enough long enough for me to change my gardening habits. Think about the amount of change that is actually occurring, some glaciers are melting, and some icecaps are growing. Some areas seem to be warmer, some seem to be colder. Hmmm...Humans just by eating and drinking end up polluting. But those pollutants get broken down, worms and nematodes have a purpose. (Dung beetles too) Although its too cold for dung beetles where I live. Some people think that Ozone is good for individual's health, others think its a severely damaging polutant, yet we need a layer of it in the atmosphere. So relax, don't fear, enjoy!!