evidence: What do CO2 emissions have to do with climate change? [...] Established as a UN body in 1988, the IPCC has 195 member countries and assesses the science related to climate change. It has attributed atmospheric CO2 increase to anthropogenic (human-caused) emissions, with three-quarters of them coming from fossil fuel burning, and the rest from land use change. [...] Human-caused climate change is endorsed by the IPCC. As far back as 1995, the intergovernmental body said"the balance of evidence suggests a discernible human influence on global climate."