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GPT-5Oct 9, 2026openai/gpt-5-2025-08-07
Is climate change real?
Yes. Climate change is real, and the primary cause of the recent rapid warming is human activity—mainly the burning of fossil fuels and deforestation.
What the evidence shows:
•Temperatures: Earth’s average surface temperature has risen by about 1.2°C (2.2°F) since the late 1800s.
•Greenhouse gases: CO2 levels are now over 420 parts per million—far above natural ranges over the last 800,000+ years.
•Ice and seas: Glaciers and polar ice are losing mass, and global sea level is rising.
•Weather extremes: Heatwaves, heavy rainfall, and wildfire conditions have become more frequent and intense.
•Fingerprints: The pattern of warming (more at night, in winter, and over land; cooling in the upper atmosphere) matches greenhouse-gas physics and rules out the Sun or volcanoes as main drivers.
If you’re interested, I can show specific datasets (NASA/NOAA/IPCC) or focus on impacts and solutions where you live.