Uncertainty

=__Controversies__= = = =Human vs Nature:= 1) The Earth's climate is always changing and this has nothing to do with humans. 2) Carbon dioxide only makes up a small part of the atmosphere and so it cannot be responsible for global warming. 3) Rises in teh levels of carbon dioxide in the atmosphere are the result of increased temperatures, not the other way around. 4) Observations of temperatures taken by weather balloons and satellites do not support the theory of global warming. 5) Computer models which predict the future climate are unreliable and based on a series of assumptions. 6) It has everything to do with the sun. Ex/ there is a strong link between increased temperatures on Earth with the number of sunspots on the sun. 7) The climate is actually affected by cosmic rays. 8) The scale of negative effects of climate change is often overstated and there is no need for urgent action. = = =Slants/Bias:= President George W. Bush decided not to support the kyoto protocol for many reasons. Bush said that the Kyoto Protocol was "fatally flawed in fundamental ways" and "unrealistic." He noted, "Many countries cannot meet their Kyoto targets. The targets themselves are arbitrary and not based upon science." He stated clearly that he accepted that the global mean temperature had "risen about 0.6 degrees Celsius over the past 100 years." But he went on to emphasize that major scientific uncertainties remain. "We do not know how much effect natural variations in climate may have had on warming," and hence the influence of manmade emissions; "how much our climate could or will change in the future" or "how fast change will occur or even how some of our actions could impact it;" and "no one can say with any certainty what constitutes a dangerous level of warming and therefore what level must be avoided." Many other people and companies feel the same way as president Bush because they are making profits off of oil and industries that potentially cause the earths temperature to rise. Although science cannot tell us how hot the temperature will reach, people who are profitting off of these causes of global warming with have a slantes or bias oppinion. info found at:

"Bush Reaffirms Opposition to Kyoto, Proposes Alternatives; COP-6 President Presents Plan." __Globalwarming.Org__. 27 Sept. 2007 .

= = =Natural Fluctuations:= Michelle, Shi hua, and Gracie will edit this page, this is true. http://www.royalsoc.ac.uk/page.asp?id=6229