As science continues to bring clarity to present and future global climate change, policymakers are beginning to respond in earnest and propose policies that aim to curb greenhouse gas emissions and help society adapt to the impending impacts triggered by past emissions. Although these policies are gaining momentum, their importance is not fully understood by many, including Congress, the public and the media. All too frequently, inaction is motivated by the perceived high cost of reducing greenhouse gas emissions. The costs of not taking on the challenges posed by climate change are frequently neglected and typically not calculated.
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