Political affiliation and partisan group identity contribute to polarisation on the causes and state of climate change, most notably in the USA . Fewer US republicans hold the belief that human activity causes climate change than democrats . Partisanship in the USA with respect to climate change has evolved over the period 1997-2016; initially, it was limited, but since 2008, there has been a widening, more entrenched partisan 'divide' . The millennial generation , emerging as the largest US population cohort, has a potentially important political influence- reduction in polarisation-as they show relatively higher levels of concern and acceptance of climate-change science than older age groups. Political affiliation does not have as strong an effect on their climate change beliefs .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report