Climate change deniers are individuals or groups who reject the scientific consensus that climate change is occurring and is primarily driven by human activities, such as the burning of fossil fuels. They often question the validity of climate data and the reliability of climate models, arguing that natural factors, rather than human actions, are responsible for changes in the Earth's climate. These deniers may promote alternative explanations for climate phenomena, such as solar activity or volcanic eruptions, and often emphasize uncertainties in climate science. Their views can influence public opinion and policy decisions, potentially hindering efforts to address the impacts of climate change.