The present science concerning global warming and CO2 is just as solid as the present science on evolution. I have been posting sites from the people that do the real science for a long time. The site that shows as "The Carbon Dioxide Greenhouse Effect" is from the American Institute of Physics. It is a history of the research into the greenhouse effects of not only CO2, but also the other GHGs.
The Carbon Dioxide Greenhouse Effect
For those doubting the overwhelming scientific consensus on this subject here is a small excerpt from a site that lists the scientific bodies that state that global warming is real, and the primary cause is the burning of fossil fuels.
Logicalscience.com - The Consensus On Global Warming/Climate Change: From Science to Industry & Religion
State of the Canadian Cryosphere (SOCC)
http://www.socc.ca/permafrost/permafrost_future_e.cfm
Environmental Protection Agency (EPA)
http://yosemite.epa.gov/OAR/globalwarming.nsf/content/index.html
American Astronomical Society
In endorsing the "Human Impacts on Climate" statement, the AAS recognizes the collective expertise of the AGU in scientific subfields central to assessing and understanding global change, and acknowledges the strength of agreement among our AGU colleagues that the global climate is changing and human activities are contributing to that change. -American Astronomical Society, 2004
The Australian Meteorological And Oceanographic Society
The greenhouse effect is a natural and well-understood phenomenon [snip]
Most of the observed warming is highly likely due to human activity
It is highly likely that those human activities that have increased the concentration of greenhouse gases in the atmosphere have been largely responsible for the observed warming since 1950. The warming associated with increases in greenhouse gases originating from human activity is called the enhanced greenhouse effect. The atmospheric concentration of carbon dioxide has increased by more than 30% since the start of the industrial age and is higher now than at any time in at least the past 650,000 years. This increase is a direct result of burning fossil fuels, broad-scale deforestation and other human activity. Concentrations of a range of other potent greenhouse gases, such as CFCs<!--[if !supportFootnotes]-->[4]<!--[endif]-->, methane and nitrous oxide, have increased also as a result of human activity, and have contributed to the observed warming. Conversely, some other by-products of human activity, most notably industrial aerosols, have had a cooling effect on the atmosphere, and have offset some of the warming from the enhanced greenhouse effect. - The Australian Meteorological and Oceanographic Society Statement on Climate Change
American Institute of Physics
The Governing Board of the American Institute of Physics has endorsed a position statement on climate change adopted by the American Geophysical Union (AGU) Council in December 2003.- American Institute of Physics, 2003