Ninety-seven percent of climate scientists agree that climate-warming trends over the past century are very likely due to human activities,1and most of the leading scientific organizations worldwide have issued public statements endorsing this position. The following is a partial list of these organizations, along with links to their published statements and a selection of related resources.
AMERICAN SCIENTIFIC SOCIETIES
Statement on climate change from 18 scientific associations
"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." (2009)2
American Association for the Advancement of Science
"The scientific evidence is clear: global climate change caused by human activities is occurring now, and it is a growing threat to society." (2006)3
American Chemical Society
"Comprehensive scientific assessments of our current and potential future climates clearly indicate that climate change is real, largely attributable to emissions from human activities, and potentially a very serious problem." (2004)4
American Geophysical Union
"Human‐induced climate change requires urgent action. Humanity is the major influence on the global climate change observed over the past 50 years. Rapid societal responses can significantly lessen negative outcomes." (Adopted 2003, revised and reaffirmed 2007, 2012, 2013)5......
Check out the graph here....
http://climate.nasa.gov/scientific-consensus
So why do rightwingnuts deny warming?
Heres why....
The Lewis Powell Memo - Corporate Blueprint to Dominate Democracy
...Forty years ago, on August 23, 1971, Justice Lewis F. Powell, Jr., an attorney from Richmond, Virginia, drafted a confidential memorandum for the U.S. Chamber of Commerce that describes a strategy for the corporate takeover of the dominant public institutions of American society...
Environmental awareness and pressure on corporate polluters had reached a new peak in the months before the Powell memo was written. In January 1970, President Nixon signed the National Environmental Policy Act, which formally recognized the environment’s importance by establishing the White House Council on Environmental Quality. Massive Earth Day events took place all over the country just a few months later and by early July, Nixon signed an executive order that created the Environmental Protection Agency (EPA). Tough new amendments to the Clean Air Act followed in December 1970 and by April 1971, EPA announced the first air pollution standards. Lead paint was soon regulated for the first time, and the awareness of the impacts of pesticides and other pollutants-- made famous by Rachel Carson in her 1962 book, Silent Spring – was recognized when DDT was finally banned for agricultural use in 1972.
http://www.greenpeace.org/usa/en/ne...well-memo-corporate-blueprint-to-/blog/36466/
...since 1997 the billionaire oil brothers Charles and David Koch have dumped over 61.3 million dollars into front groups that attack climate science and policies designed to solve global warming. According to the 2010 IRS records of their private foundations, the latest year available, the Koch brothers funneled another $4.38 million into the Climate Denial Machine from their private foundations.
Despite overwhelming consensus among climate change researchers and scientific institutions worldwide—including all the Academies of Sciences in industrialized countries, the Intergovernmental Panel on Climate Change, NASA and all other major US scientific institutions—recognition of global warming among Americans remains startlingly low. Fueled by Koch money, the Climate Denial Machine has executed an unceasing, anti-scientific and anti-regulatory public relations campaign that mirrors the tactics used by tobacco companies to deny the health consequences of smoking.
The top recipients of Koch money in the Climate Denial Machine include Americans for Prosperity ($5.7 million since 1997), the Heritage Foundation ($2.7 million), the Cato Institute ($1.2 million), and the Manhattan Institute ($1.2 million)...