More answers like this
GPT-5Oct 16, 2026openai/gpt-5-2025-08-07
Is climate change real?
Yes
Yes. Climate change is real, and the primary driver of the recent warming is human activity—mainly the burning of fossil fuels and deforestation.
Key evidence:
•Global temperature: Earth has warmed about 1.1–1.3°C (2.0–2.3°F) since the late 1800s.
•Greenhouse gases: CO2 rose from ~280 ppm pre‑industrial to over 420 ppm today, with chemical “fingerprints” tying the increase to fossil fuels.
•Ice and snow: Glaciers and Arctic sea ice are shrinking; spring snowpack melts earlier.
•Seas and oceans: Global sea level has risen roughly 8–10 inches (20–25 cm) since 1900 and is accelerating; ocean heat content keeps setting records.
•Weather extremes: Heat waves are more frequent and intense; heavy rainfall events have increased in many regions; drought and wildfire risk have risen in susceptible areas.
•Atmospheric fingerprints: The lower atmosphere warms while the stratosphere cools—exactly what greenhouse theory predicts.
If you’re skeptical, what part would you like to dig into—the temperature record, CO2’s role, or extreme weather?