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Politics : View from the Center and Left -- Ignore unavailable to you. Want to Upgrade?

To: Lane3 who wrote (25097)	7/25/2006 2:26:33 PM
From: Ilaine	Read Replies (4) \| Respond to of 541580

After reading this article in Wikipedia, it seems to me that asking the following questions gets you labeled as a "skeptic" and that "skeptic" and "denier" are treated as the same thing. >> 1. Whether the climate is changing beyond natural variations (historical temperature record). 2. Whether human/industrial activity is responsible for the change (attribution of recent climate change) and if so, to what extent. 3. How large future changes will be. 4. What will be the consequences of climate change. en.wikipedia.org In another Wiki article, it appears to me that the much ballyhooed "consensus" is that the earth has warmed 0.4% centigrade over the past 50 years, probably due to human activity. I don't get the sense that projections of what will happen in the future have this "consensus." >>Over the past 5 decades there has been a warming of approximately 0.4°C at the Earth's surface (see historical temperature record). This warming might have been caused by internal variability, or by external forcing, or by "greenhouse" gases. Current studies indicate the latter is most likely, on the grounds that * estimates of internal variability from climate models, and reconstructions of past temperatures, indicate that the warming is unlikely to be entirely natural * climate models, forced by changes in greenhouse gases and aerosols, reproduce the observed global changes; those forced by natural factors alone do not * "fingerprint" methods indicate that the pattern of change is closer to that expected from greenhouse gas forced change than from natural change [3] en.wikipedia.org I commend Wikipedia for carrying these and many other articles on climate change and the political controversy surrounding it.