Leading scientific organizations, including the IPCC, NASA, and NOAA, have independently concluded that human activities, particularly the emission of greenhouse gases, are the primary driver of observed climate change since the mid-20th century. Attribution studies cited in the IPCC Sixth Assessment Report show that human-caused emissions are responsible for about 1.07°C of global warming, while natural factors have made only a minimal impact (–0.1°C to +0.1°C).
The National Academies of Sciences, Engineering, and Medicine also support this conclusion, emphasizing the overwhelming evidence linking human activity to current and future climate impacts. Low-authority dissenting sources have not presented peer-reviewed evidence to challenge this consensus.
This scientific agreement is reflected in numerous official reports and public statements, making the consensus on human-caused climate change clear and robust.