character: John Tyndall
topic: Greenhouse Gases and Their Impact
grade: 12
subject: Chemistry
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character: Svante Arrhenius
topic: Climate Change and Greenhouse Effect
grade: 12
subject: Chemistry
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character: James Hansen
topic: Global Warming and its Scientific Implications
grade: 12
subject: Chemistry
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character: Michael Mann
topic: Paleoclimate and Modern Climate Trends
grade: 12
subject: Chemistry
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