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GPT-5Sep 25, 2026openai/gpt-5-2025-08-07
Is climate change real?
Yes. Climate change is real, and the primary driver is human activity—mainly burning fossil fuels, deforestation, and certain industrial and agricultural practices.
Why scientists are confident:
•Temperatures: Earth’s average surface temperature has risen by a little over 1°C (about 2°F) since the late 1800s, and the most recent decade has been the warmest on record.
•Greenhouse gases: Atmospheric CO2 climbed from ~280 ppm pre‑industrial to over 420 ppm today; the heat‑trapping effect of these gases is basic physics.
•Ice and seas: Glaciers are retreating, Arctic sea ice is shrinking, the Greenland and Antarctic ice sheets are losing mass, and global sea level has risen by many inches and is accelerating.
•Oceans: The oceans are warming and becoming more acidic as they absorb heat and CO2.
•Extremes: Heat waves are more frequent and intense; heavy downpours are increasing in many regions; wildfire and drought patterns are shifting.
If you want, I can share sources or dive into impacts and solutions for your region.