1- While a few scientists speak of global warming as a fact, many more—especially those who are directly involved in climate science—say the data do not support it. To date, 19,700 scientists, including 2,660 physicists, geophysicists, climatologists, meteorologists, oceanographers, and environmental scientists, have signed a petition sponsored by the Oregon Institute of Science and Medicine that discounts global warming. Its accompanying report concludes:
( this is the actual report )There are no experimental data to support the hypothesis that increases in carbon dioxide and other greenhouse gases are causing or can be expected to cause catastrophic changes in global temperatures or weather. To the contrary, during the 20 years with the highest carbon dioxide levels, atmospheric temperatures have decreased. (1)

2-Dr. Ulrich Berner, a German geologist, cited global temperature variations in the past as evidence that human activity is unrelated to climate change. A study of surface temperatures in the Sargasso Sea over the past 3,000 years (determined by isotope ratios of marine organism remains in sediment), showed an average temperature of 23ºC. The present average temperature is below the 3,000-year average by a few tenths of a degree (2)

3-Dr. Berner also explained that extensive analysis of carbon dioxide concentrations show that elevated CO2 levels do not necessarily lead to climate change. He said, "There are numerous temperature changes which are not mimicked by the CO2 concentration." In fact, according to MIT meteorologist Richard S. Lindzen, worldwide CO2 concentrations over the past century have increased from 0.028% to 0.036%, an insignificant percentage (3)

4- temperature readings from the last sixty years show "no appreciable warming since 1940," said Singer. "This would indicate that the human effects on climate must be quite small." He suggested that the primary influence on climate change is—of all things!—the sun. The sun has been shown to go through long-term changes in activity, varying the amount of radiation aimed at the earth and causing the mean temperature to rise or fall. These shifts have a far greater effect on climate than greenhouse gases. (4)

5-The West Antarctic Ice Sheet (WAIS) is of particular concern to environmentalists, as they estimate that if it collapses, sea levels could rise by as much as five meters. As late as June 2002, two U.S. scientists reported in the journal Science that the floating fringes of the WAIS are melting faster than previously suggested because the surrounding seawater is warming.(5) However, their findings have drawn criticism because they used satellite radar interferometry rather than on-location samples.

Other research, however, has found that the WAIS is actually thickening, not thinning. A January 2002 article in Science found evidence that not only is the "retreat" of the WAIS coming to an end, but the ice sheet is actually growing by 26.8 gigatons each year.(6) This concurs with studies that say Antarctica is cooling, not warming. One University of Illinois at Chicago study found that temperatures had cooled as much as 0.7ºC per decade between 1986 and 2000.10 (7)

There is my counter, Here is my work cited page-
1-Robinson, Arthur B, Baliunas, Sallie L., et al., "Environmental Effects of Increased Atmospheric Carbon Dioxide," January 1998, p. 7 (http://www.oism.org/pproject/s33p36.htm).

2- Ibid., p.1-2

3-Stephens, Bret, "It's Curtains for Global Warming," Jerusalem Post, June 27, 2002.

4-Morano, Marc, "Global Warming Models Labeled 'Fairy Tale' by Team of Scientists," Cybercast News Service, May 14, 2002 (http://www.cnsnews.com/Nation/Archiv...0020514b.html).

5-Rignot, Eric and Jacobs, Stanley, "Rapid Bottom Melting Widespread near Antarctic Ice Sheet Grounding Lines," Science, June 14, 2002, pp. 2020-2023.

6- Joughin, Ian and Tulaczyk, Slawek, "Positive Mass Balance of the Ross Ice Streams, West Antarctica," Science, January 18, 2002, pp. 476-480.

7- Doran, Peter T. and Priscu, John C., et al., "Antarctic Climate Cooling and Terrestrial Ecosystem Response," Nature, January 31, 2002, pp. 517-520