More answers like this
GPT-5Sep 17, 2026openai/gpt-5-2025-08-07
Is climate change real?
Yes. The planet is warming and human activity is the primary cause.
Why scientists are sure:
•Basic physics: Greenhouse gases (CO2, methane, etc.) trap heat. We’ve raised CO2 ~50% above pre‑industrial levels, mostly by burning fossil fuels and deforestation.
•Consistent measurements: Global surface temperatures have risen a little over 1°C (≈2°F) since the late 1800s; oceans are storing more heat; sea level is rising; glaciers and Arctic sea ice are shrinking.
•“Fingerprints” match human causes: The lower atmosphere warms while the upper atmosphere cools; nights and winters warm faster than days and summers; the Arctic warms faster than the globe—patterns predicted from added greenhouse gases.
•Scientific consensus: Every major national academy of science and relevant scientific society concludes recent warming is real and mainly human‑caused.
If you’d like, I can summarize likely impacts where you live or discuss what solutions make the biggest difference.