character: Bill Nye
topic: Effects of Carbon Dioxide on Global Warming
grade: 12
subject: Chemistry
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character: David Attenborough
topic: The Science of Climate Change
grade: 12
subject: Chemistry
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character: Carl Sagan
topic: The Impact of Greenhouse Gases
grade: 12
subject: Chemistry
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character: Neil deGrasse Tyson
topic: Understanding Climate Change and its Effects
grade: 12
subject: Chemistry
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