Is climate change real?

Yes, climate change is real. This is one of the most well-established findings in modern science, supported by overwhelming evidence from multiple independent lines of research.

Key Evidence

Temperature records: Global average temperatures have risen significantly since the late 19th century, with the most rapid warming occurring in recent decades. Multiple independent datasets from different agencies and countries all show the same warming trend.

Physical indicators:

Scientific consensus: The vast majority of actively publishing climate scientists agree that climate change is happening and that human activities—primarily the burning of fossil fuels, which releases greenhouse gases like CO2—are the dominant cause since the mid-20th century.

Physical mechanism: The basic science of the greenhouse effect has been understood for over 150 years. Increased concentrations of CO2, methane, and other greenhouse gases trap more heat in the atmosphere, a mechanism confirmed through laboratory physics, atmospheric measurements, and climate modeling.

Major scientific bodies including NASA, NOAA, the IPCC (Intergovernmental Panel on Climate Change), national academies of science from numerous countries, and virtually every major scientific organization worldwide have concluded that climate change is real and primarily human-caused.

If you're interested in more specific aspects—like regional impacts, the difference between weather and climate, or what's being done about it—I'm happy to go deeper on any of those topics.