Dr. Ben Santer's life changed that day he got a phone call from the Intergovernmental Panel on Climate Change (IPCC) , asking him to be the lead author of a chapter on the causes of climate change for the 1995 Report by the Intergovernmental Panel on Climate Change (IPCC) . The world changed the day these words were published: “the balance of evidence suggests a discernible human influence on global climate.”