Is climate change real?

Yes, climate change is real. It is supported by overwhelming scientific evidence and near-universal consensus among climate experts. The Earth is warming, primarily due to human activities, and this is causing widespread changes to the climate system.[1]

Scientific Consensus

Multiple independent studies of peer-reviewed literature and surveys of climate scientists show extremely high agreement:

The Intergovernmental Panel on Climate Change (IPCC), which synthesizes the work of thousands of scientists, states in its Sixth Assessment Report (AR6, 2021–2023): “It is unequivocal that human influence has warmed the atmosphere, ocean and land.” Global surface temperature reached about 1.1°C above 1850–1900 levels in 2011–2020.[1]

Key Evidence That the Climate Is Warming

Multiple independent lines of observational evidence confirm planetary warming:

Paleoclimate data (ice cores, tree rings, sediments, etc.) show that the current rate of warming is unusually rapid compared to natural changes over millennia.

Evidence That Humans Are the Primary Cause

Natural climate variability (e.g., El Niño, orbital cycles) exists and has caused past changes, but it cannot account for the rapid, ongoing warming since the Industrial Revolution. The IPCC and major scientific bodies conclude human influence is the principal driver.[8]

Ongoing Impacts and Outlook

Human-caused climate change is already affecting weather and climate extremes on every continent, with impacts on ecosystems, food/water security, health, and infrastructure. Continued emissions will lead to further warming, with the severity depending on the total cumulative emissions. Limiting warming requires substantial reductions in greenhouse gas emissions, reaching net-zero CO₂.[1]

In short, the reality of climate change—and humanity’s dominant role in the recent warming—is one of the most robust conclusions in modern science, backed by decades of data, physics, and independent verification. Uncertainties remain in precise regional projections, climate sensitivity details, and some feedbacks, but these do not undermine the core findings. For primary sources, see reports from the IPCC, NASA’s climate site, NOAA Climate.gov, and the Royal Society.