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GPT-5Oct 2, 2026openai/gpt-5-2025-08-07
Is climate change real?
Yes. Climate change is real, and the planet is warming. The strongest evidence shows recent warming is primarily caused by human activities—especially burning fossil fuels, which increases heat‑trapping gases like CO2 and methane.
Why scientists are sure:
•Basic physics: Greenhouse gases absorb and re‑emit heat; adding more increases Earth’s energy imbalance.
•Consistent observations: Rising global temperatures, record ocean heat, sea‑level rise, shrinking glaciers and Arctic sea ice, earlier springs and shifting species ranges.
•“Fingerprints” of human cause: Nights warming faster than days, the lower atmosphere warming while the stratosphere cools, faster warming over land and in the Arctic, and the carbon‑isotope signature of fossil‑fuel CO2.
This warming raises the risk of extreme heat, heavier downpours and flooding, intensified drought in some regions, longer wildfire seasons, and coastal flooding from higher seas.
If you’d like, I can share key sources, explain impacts where you live, or discuss what solutions make the biggest difference.