In 1990 Singer founded the Science & Environmental Policy Project, and in 2006 was named by the Canadian Broadcasting Corporation as one of a minority of scientists said to be creating a stand-off on a consensus on climate change. Singer argued, contrary to the scientific consensus on climate change, that there is no evidence that global warming is attributable to human-caused increases in atmospheric carbon dioxide, and that humanity would benefit if temperatures do rise. He was an opponent of the Kyoto Protocol, and has claimed that climate models are neither based on reality nor evidence. Singer was accused of rejecting peer-reviewed and independently confirmed scientific evidence in his claims concerning public health and environmental issues.