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GPT-5Oct 7, 2026openai/gpt-5-2025-08-07
Is climate change real?
Yes. Climate change is real, and the dominant cause of the recent rapid warming is human activity—primarily burning coal, oil, and gas, plus deforestation.
Why scientists are confident:
•Thermometers show Earth has warmed by about 1.2°C (2.2°F) since the late 1800s.
•Greenhouse gases (CO2, methane) are rising and we can directly measure their heat-trapping effect in the atmosphere.
•Oceans are absorbing most of the excess heat; ocean heat content and global sea level are at record highs due to thermal expansion and melting ice.
•Glaciers and Arctic sea ice are shrinking worldwide.
•Climate models only reproduce the observed warming when human emissions are included.
What this means for people:
•Hotter, longer heat waves; heavier downpours and flooding in many regions; intensified drought and wildfire risk in others.
•Rising seas increasing coastal flooding; warmer, more acidic oceans stressing marine life.
If you’d like, I can share plain-language sources (NASA, NOAA, IPCC) or focus on impacts and solutions for your area.