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GPT-5Nov 8, 2026openai/gpt-5-2025-08-07
Is climate change real?
Yes. Climate change is real and primarily caused by human activities, especially burning fossil fuels and deforestation.
Key evidence:
•Global average temperature has risen by roughly 1.2°C (about 2.2°F) since the late 1800s.
•Atmospheric CO2 is now over 420 ppm—about 50% higher than preindustrial levels (~280 ppm).
•Seas have risen about 8 inches (20 cm) since 1900, and glaciers/ice sheets are shrinking.
•Heatwaves, heavy rainfall, wildfires, and droughts have become more frequent or intense in many regions.
•Oceans are warming and acidifying, stressing marine life.
These findings are documented by major scientific bodies worldwide (e.g., the IPCC and national academies). If you’d like, I can share accessible sources or dig into impacts and solutions specific to your area.