In 1995 the Intergovernmental Panel on Climate Change (IPCC) issued a report reflecting the scientific consensus that the balance of evidence suggests there is a discernible human influence on global climate. Singer responded with a letter to "Science" saying the IPCC report had presented material selectively. He wrote: "the Summary does not even mention the existence of 18 years of weather satellite data that show a slight global cooling trend, contradicting all theoretical models of climate warming." Scheuering writes that Singer acknowledges the surface thermometers from weather stations show warming, but he argues that the satellites provide better data because their measurements cover pole to pole.