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Claude Sonnet 5Sep 4, 2026anthropic/claude-sonnet-5-20260630
Is climate change real?
Climate Change: Scientific Consensus
Yes, climate change is real and well-documented. Here's a summary of the evidence:
Key Facts
Temperature rise: Global average temperatures have increased by about 1.1°C (2°F) since pre-industrial times, with the last decade being the warmest on record.
Multiple lines of evidence:
•Rising sea levels (~8-9 inches since 1880)
•Shrinking ice sheets and glaciers
•Ocean warming and acidification
•Increasing frequency of extreme weather events
•Shifting plant and animal ranges
Scientific Consensus
Approximately 97-99% of actively publishing climate scientists agree that:
1.The climate is warming
2.Human activities (primarily burning fossil fuels) are the dominant cause
3.This is happening at a pace unprecedented in recent geological history
Major Organizations in Agreement
This consensus is supported by:
•NASA
•NOAA
•IPCC (Intergovernmental Panel on Climate Change)
•National academies of science from multiple countries
•Major scientific organizations across disciplines
What Remains Debated
While the core science is settled, there's legitimate ongoing discussion about:
•Specific regional impacts and timing
•Best policy responses
•Economic tradeoffs of different solutions
•Precise climate sensitivity figures
Would you like more detail on any particular aspect—the evidence, causes, impacts, or potential solutions?