På Wikipedia står det:
"The scientific opinion on climate change is the overall judgment among scientists regarding the extent to which global warming is occurring, its likely causes, and its probable consequences. The scientific consensus is that the Earth's climate system is unequivocally warming, and that it is extremely likely (meaning 95% probability or higher) that this warming is predominantly caused by humans.
Several studies of the consensus have been undertaken. Among the most-cited is a 2013 study of about 12,000 peer-reviewed papers on climate science published since 1990, of which about 4,000 papers expressed an opinion on the cause of recent global warming. Of these, 97% agree, explicitly or implicitly, that global warming is happening and is human-caused. It is likely that this warming arises from increased concentrations of greenhouse gases in the atmosphere, primarily from the burning of fossil fuels, partially offset by human-caused and volcanic aerosols; natural change has had little effect."
https://en.wikipedia.org/wiki/Scientific_opinion_on_climate_c...
På Nasas hemsida står det:
"Multiple studies published in peer-reviewed scientific journals1 show that 97 percent or more of actively publishing climate scientists agree*: Climate-warming trends over the past century are extremely likely due to human activities. In addition, most of the leading scientific organizations worldwide have issued public statements endorsing this position."
https://climate.nasa.gov/scientific-consensus/