character: Dr. Michael Green
topic: Greenhouse Gases and Climate Change
grade: 12
subject: Chemistry
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character: Al Gore
topic: Climate Policy and Environmental Activism
grade: 12
subject: Chemistry
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character: James Hansen
topic: Scientific Research on Global Warming
grade: 12
subject: Chemistry
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character: Bill Nye
topic: Science Education and Climate Change Awareness
grade: 12
subject: Chemistry
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