To: steve harris who wrote (371823 ) 2/24/2008 6:43:39 PM From: RetiredNow Read Replies (1) | Respond to It's not the left concluding anything. It's scientists the world round. Your politics are clouding your judgement. BTW, one thing you are right about is that CO2 levels have swung way up and way down over the various geological periods of our earth's history. There were periods when oxygen levels were extremely high and that lead to gigantism among creatures now known as dinosaurs. In other periods such as the Carbonaceous period, the earth was considered to be CO2 impoverished, as it is today. The truth is that the earth does go through many cycles of CO2 levels. Another unfortunate truth is that humans can only live in a narrow band of CO2 levels. If they get too high, it leads to warming and air mixtures beyond which the earth can support human life. Two things we know for sure is that the climate warming and CO2 are statistically correlated and that human activity is causing an acceleration in the increase in CO2 levels. If we continue down this path, we will most certainly increase CO2 levels beyond which we can live in. It probably won't be in our lifetimes, but it could be in our children's or grandchildren's lifetimes. I hope we either learn to control CO2 levels or have colonized other worlds by then, or we will be done as a species.
