In 1990... less than half the world's scientists believed in anthropogenic climate change but most agreed we should increase research for it. By 1999, it was more than half. Today it is the overwhelming majority and "no remaining scientific body of national or international standing is known to reject the basic findings of human influence on recent climate change" 
Just a few examples...
Global Environmental Change Report (GECR climate survey), 1990:
"National and international science academies and professional societies have assessed the current scientific opinion on climate change, in particular recent global warming"
Global Environmental Change Report 2, No. 9, pp. 1-3
A 2004 article by geologist and historian of science Naomi Oreskes summarized a study of the scientific literature on climate change. The essay concluded that there is a scientific consensus on the reality of anthropogenic climate change. The author analyzed 928 abstracts of papers from refereed scientific journals between 1993 and 2003, listed with the keywords "global climate change". Oreskes divided the abstracts into six categories: explicit endorsement of the consensus position, evaluation of impacts, mitigation proposals, methods, paleoclimate analysis, and rejection of the consensus position. 75% of the abstracts were placed in the first three categories, thus either explicitly or implicitly accepting the consensus view
Joint science academies’ statement 2007:
In preparation for the 2007 G8 summit, the national science academies of the G8+5 nations issued a declaration referencing the position of the 2005 joint science academies' statement, and acknowledging the confirmation of their previous conclusion by recent research. Following the IPCC Fourth Assessment Report, the declaration states:
"It is unequivocal that the climate is changing, and it is very likely that this is predominantly caused by the increasing human interference with the atmosphere. These changes will transform the environmental conditions on Earth unless counter-measures are taken."
American Meteorological Society:
The American Meteorological Society (AMS) statement adopted by their council in 2003 said:
"There is now clear evidence that the mean annual temperature at the Earth's surface, averaged over the entire globe, has been increasing in the past 200 years. There is also clear evidence that the abundance of greenhouse gases in the atmosphere has increased over the same period. In the past decade, significant progress has been made toward a better understanding of the climate system and toward improved projections of long-term climate change... Human activities have become a major source of environmental change. Of great urgency are the climate consequences of the increasing atmospheric abundance of greenhouse gases... Because greenhouse gases continue to increase, we are, in effect, conducting a global climate experiment, neither planned nor controlled, the results of which may present unprecedented challenges to our wisdom and foresight as well as have significant impacts on our natural and societal systems."
Geological Society of America:
"The Geological Society of America (GSA) supports the scientific conclusions that Earth’s climate is changing; the climate changes are due in part to human activities; and the probable consequences of the climate changes will be significant and blind to geopolitical boundaries."
The American Association of Petroleum Geologist Position Statement:
Recently to the adoption of this statement, the AAPG was the only major scientific organization that rejected the finding of significant human influence on recent climate, according to a statement by the Council of the American Quaternary Association. The AAPG updated its statement in part because the previous statement was "not supported by a significant number of our members and prospective members".
Statements by dissenting organizations:
"With the July 2007 release of the revised statement by the American Association of Petroleum Geologists , no remaining scientific body of national or international standing is known to reject the basic findings of human influence on recent climate change."
 Scientific opinion on climate change
From Wikipedia, the free encyclopedia:
 The American Association of Petroleum Geologist Position Statement:
· 1 decade ago