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Explore the Climate Hot Map to see evidence of climate change including heat waves, sea-level rise, flooding, melting glaciers, earlier spring arrival, coral reef bleaching, and the spread of disease.
While some would call global warming a theory, others would call it a proven set of facts. Opinions differ vehemently.
Global warming facts, pictures, video, and quizzes from National Geographic...
Global Warming effects around the world.
The average surface temperature of earth has increased more than 1 degree Fahrenheit since 1900 and the rate of warming has been nearly three times the century-long average since 1970.