Is climate change real?
Yes, climate change is real. The overwhelming scientific evidence shows that Earth’s climate is warming at an unprecedented rate, primarily due to human activities, and this conclusion is supported by multiple independent lines of evidence and near-unanimous expert consensus.[1]
Scientific Consensus
Multiple studies of peer-reviewed literature and surveys of climate scientists find that 97% to over 99% of actively publishing climate scientists agree that human-caused (anthropogenic) global warming is occurring.[2][3]
Public perception often underestimates this consensus, but it is robust and has strengthened over time.[8]
Key Evidence That the Planet Is Warming
Observations from instruments, satellites, and natural archives confirm warming:
Humans Are the Primary Cause
Addressing Common Counter-Arguments
Claims that “climate has always changed,” “it’s just a cycle,” “scientists disagree,” or “models are unreliable” do not hold up against the evidence. Past natural changes occurred over much longer timescales and from different causes. The current change is rapid, globally coherent, and matches the expected human fingerprint. Models have a strong track record for large-scale temperature trends. Remaining scientific discussion focuses on details of impacts, regional effects, tipping points, and the best responses—not on whether warming is real or human-caused.[13][14]
In short, the reality of human-caused climate change rests on converging evidence from physics, observations, paleoclimate records, and attribution studies. It is one of the most thoroughly vetted conclusions in modern science. Effects are already observable and are projected to intensify with continued emissions, though the severity depends on future actions. For primary sources, see NASA’s climate site, NOAA Climate.gov, and IPCC reports.
Citations (14)
- https://archive.ph/2024.10.06-154745/https://science.nasa.gov/climate-change/evidence/
Backs: “The overwhelming scientific evidence shows that Earth’s climate is warming at an unprecedented rate, primarily due to human activities, and this conclusion is supported by multiple independent lines of evidence and near-unanimous expert consensus.”
- https://archive.is/2025.02.12-121037/https://science.nasa.gov/climate-change/faq/do-scientists-agree-on-climate-change/
Backs: “Multiple studies of peer-reviewed literature and surveys of climate scientists find that 97% to over 99% of actively publishing climate scientists agree that human-caused (anthropogenic) global warming is occurring.”
- https://iopscience.iop.org/article/10.1088/1748-9326/ac2966
Backs: “Multiple studies of peer-reviewed literature and surveys of climate scientists find that 97% to over 99% of actively publishing climate scientists agree that human-caused (anthropogenic) global warming is occurring.”
- https://www.forbes.com/sites/dianneplummer/2025/01/31/climate-change-is-it-the-greatest-crisis-or-a-global-deception/
Backs: “Later reviews, including one examining over 88,000 climate-related papers (2012–2020), found greater than 99% consensus, with only a tiny number of skeptical papers (often in lower-impact journals).”
- https://www.climate.gov/news-features/climate-qa/isnt-there-lot-disagreement-among-climate-scientists-about-global-warming
Backs: “National Academies of Sciences, Engineering, and Medicine, the American Association for the Advancement of Science (AAAS), the American Meteorological Society, and many others—have issued statements affirming this.”
- https://science.nasa.gov/climate-change/scientific-consensus/
Backs: “National Academies of Sciences, Engineering, and Medicine, the American Association for the Advancement of Science (AAAS), the American Meteorological Society, and many others—have issued statements affirming this.”
- https://www.ipcc.ch/report/ar6/wg1/chapter/summary-for-policymakers/
Backs: “The IPCC’s Sixth Assessment Report states it is “unequivocal” that human influence has warmed the atmosphere, ocean, and land.”
- https://www.sciencedaily.com/releases/2024/08/240826131219.htm
Backs: “Public perception often underestimates this consensus, but it is robust and has strengthened over time.”
- https://www.climate.gov/news-features/climate-qa/what-evidence-exists-earth-warming-and-humans-are-main-cause
Backs: “Independent datasets from NASA (GISTEMP), NOAA, the UK Met Office (HadCRUT), and Berkeley Earth all show the same long-term trend.”
- https://www.usgs.gov/faqs/how-do-we-know-climate-changing
Backs: “Earlier spring blooming and bird migrations, shifting species ranges, more intense heat waves and extreme precipitation in many regions, and ocean acidification (from absorbed CO₂).”
- https://news.agu.org/press-release/scientists-reaffirm-incontrovertible-evidence-of-human-influence-on-climate/
Backs: ““Fingerprint” studies detect the human signature across the climate system (tropospheric warming + stratospheric cooling, etc.).”
- https://www.metlink.org/resource/ipcc-2021-the-evidence-for-climate-change/
Backs: ““Fingerprint” studies detect the human signature across the climate system (tropospheric warming + stratospheric cooling, etc.).”
- https://www.ube.ac.uk/whats-happening/articles/climate-change-denial-myths/
Backs: “Remaining scientific discussion focuses on details of impacts, regional effects, tipping points, and the best responses—not on whether warming is real or human-caused.”
- https://www.unep.org/gan/node/14626
Backs: “Remaining scientific discussion focuses on details of impacts, regional effects, tipping points, and the best responses—not on whether warming is real or human-caused.”