. But, he says, the film started a broader dialog about global warming.
“People started caring,
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,” he says,
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, noting that he remembers his own family talking about it (and not always harmoniously) at the time. Revisiting the dramati...dictions made in the film proved an interesting journey for Sumner.
“The main criticism I heard was that the film had watered down the science,
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,” he says. Climate science is amazingly complex,
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, and so is modeling effects of change — from how much sea level might rise to how a warming climate could alter hurricane patterns. Even more striking to Sumner were the sheer number of uncertainties that remain. Those uncertainties are not about whether the climate is changing, but about the details of what such changes will mean for the oceans, the atmosphere and the living things on land — and when the various dominoes might fall. Telling the future is hard, especially about interrelated complex systems,
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, but as Sumner reveals in his story,
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, scientists have made steady progress in the last decade.
Another interesting point is the documentary’s (and Al Gore’s) role in politicizing climate science,
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, which is fair to assume was one of the aims. “Gore was polarizing,” Sumner says. “He created a conversation about global warming, but he also cemented it as a political issue.”
Teeth and gums are neither political nor talked much about. But, as contributing correspondent Laura Beil reports,
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, scientists studying

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