> What I want to know is how anyone can tell me that CO2, which is required for plant growth, is bad, plants give off oxygen that we need to stay alive.
Carbon dioxide becomes a problem when it reaches levels not seen since long before humans walked the earth. In the sixty years since NOAA started monitoring atmospheric CO2 levels, they have steadily climbed from about 320 parts per million to over 410 ppm.
Yes, plants process CO2. But human efforts at deforestation have effectively eliminated much of our planet's ability to remove carbon dioxide from the air. That means a lot of CO2 ends up in oceans, where it raises seawater acidity, which in turn has devastating effects on the coral reefs that sustain much of the earth's sea life.
Whether or not you choose to accept it, sea levels ARE rising due to global warming. And the relationship between greenhouse gases and climate change has been well established for decades.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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