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总结
多家美国媒体报道，美国环保署（EPA）正在调整制定空气污染法规时的成本—收益评估方法，拟弱化或不再把减少污染带来的健康收益与“挽救生命”等因素纳入核心计算，而更强调企业合规成本与经济负担。批评者称此举将改变排放标准的论证基础，可能削弱监管强度并增加公众健康风险；支持者则认为可避免夸大收益、减少对产业的冲击。相关变化或将影响未来空气质量规则的制定与司法审查。
正文
The EPA is changing how it considers the costs and benefits of air pollution rules NPR E.P.A. to Stop Considering Lives Saved by Limiting Air Pollution The New York Times EPA says it will no longer consider health costs in pollution regulations The Washington Post Leaked Emails Expose Trump EPA's 'Seismic Shift' on Air Pollutants The Daily Beast EPA No Longer Considering Lives Saved in Pollution Rules, Only Cost to Business Truthout
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