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GPT-5Sep 20, 2026openai/gpt-5-2025-08-07
Is climate change real?
Yes. The planet is warming and humans are the primary cause.
Key evidence:
•Physics: Greenhouse gases like CO2 and methane trap heat; this is measured in the lab and seen from satellites.
•Temperature: Average global surface temperature has risen by about 1.2°C (2.2°F) since the late 1800s; the last decade has been the warmest on record.
•Oceans and ice: Oceans are absorbing most of the extra heat; glaciers and the Greenland/Antarctic ice sheets are losing mass; sea level has risen about 8–9 inches (20–23 cm) since 1880, and the rate is speeding up.
•Fingerprints: The lower atmosphere warms while the stratosphere cools; nights and winters warm faster than days and summers—patterns expected from greenhouse-gas forcing, not the sun or volcanoes.
•Extremes: Heatwaves are becoming more frequent and intense, heavy rainfall is increasing, and some regions are seeing worse drought and wildfire conditions.
This view is endorsed by major scientific bodies worldwide (e.g., IPCC, U.S. National Academies, NASA, NOAA). If you’d like, I can show data for your state or answer specific doubts you’ve heard.