A new survey of the scientific community has found near unanimous agreement that human activity causes climate change. Citing the work of more than 29,000 scientists in peer-reviewed journals, the survey’s authors say the consensus on human-caused global warming stands at 97.1 percent. Addressing the efforts by industrial polluters to fund climate skepticism, the study’s lead author, John Cook, said: “There is a gaping chasm between the actual consensus and the public perception.”