Virtually all of our most prestigious scientific and academic institutions have stated that climate change is happening and that human activities are the driving cause of this change. Many of us in Congress received a letter from those institutions in October 2009. Let me quote from that letter.
Observations throughout the world make it clear that climate change is occurring, and rigorous scientific research demonstrates that the greenhouse gases emitted by human activities are the primary driver. These conclusions are based on multiple independent lines of evidence, and contrary assertions are inconsistent with an objective assessment of the vast body of peer-reviewed science.
Let me repeat that last quote.
Contrary assertions are inconsistent with an objective assessment of the vast body of peer-reviewed science.
This letter was signed by the heads of the following organizations: the American Association for the Advancement of Science, the American Chemical Society, the American Geophysical Union, the American Institute of Biological Sciences, the American Meteorological Society, the American Society of Agronomy, the American Society of Plant Biologists, the American Statistical Association, the Association of Ecosystem Research Centers, the Botanical Society of America, the Crop Science Society of America, the Ecological Society of America, the Natural Science Collections Alliance, the Organization of Biological Field Stations, the Society for Industrial and Applied Mathematics, the Society of Systematic Biologists, the Soil Science Society of America, and the University Corporation for Atmospheric Research.