Trump's EPA is paving the way for haze to return to national parks

世界
3 min read
2026-04-17
Guide
国家公园往往被视为一片远离城市喧嚣的净土,清新的空气和开阔的视野也是人们前往这些地方的重要原因。过去几十年里,一些国家通过严格的环境政策,逐步减少污染排放,让许多自然保护区的空气质量明显改善。然而,随着能源需求和经济压力的增加,有关是否继续维持这些限制措施的争论也在不断加剧。当环保政策出现调整,曾经改善的环境是否会再次恶化?在发展与保护之间,又该如何找到平衡点呢?我们马上和 Ronan 一起走进今天的文章。
Poster

A year ago, federal environmental regulators told West Virginia officials that their plan to clear sulfur and smog from skies over the state's national wilderness areas wasn't good enough because a dozen coal plants didn't analyze whether they needed better pollution controls.

Six months later, the Environmental Protection Agency, now firmly under President Donald Trump's control, blessed the same plan, saying technology evaluations wouldn't be necessary as long as visibility hit projected benchmarks.

Conservationists say the about-face in West Virginia is just one example of the Trump administration clearing the way for states to roll back pollution restrictions that have helped clear the air over beloved national parks and wilderness areas over the last 25 years.

The regional haze rule requires states to come up with plans every 10 years to limit emissions and monitor air pollution in more than 150 national parks, wilderness areas, wildlife refuges and tribal reservations across 36 states.

Since the rule took effect in 1999, more than 90% of parks and wilderness areas have seen sulfur and smog emissions decline dramatically.

But energy producers argue the regulations have done their job and are too costly. EPA Administrator Lee Zeldin announced in March 2025 that the agency would look to roll back 31 landmark environmental regulations, including the regional haze rule, to relieve regulatory pressure on the fossil fuel industry.

The EPA also has warned that the Trump administration won't support states that push for plant closures to comply with regional haze requirements and that states have to consider plant closure or pollution reduction technology's effects on grid reliability.

The National Parks Conservation Association, the Sierra Club and the environmental law firm Earthjustice are suing EPA, arguing the new policy threatens air quality in national parks, including Shenandoah, the Great Smoky Mountains and Mammoth Cave, already one of the nation's haziest parks.

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Trump's EPA is paving the way for haze to return to national parks

2026-04-17

国家公园往往被视为一片远离城市喧嚣的净土,清新的空气和开阔的视野也是人们前往这些地方的重要原因。过去几十年里,一些国家通过严格的环境政策,逐步减少污染排放,让许多自然保护区的空气质量明显改善。然而,随着能源需求和经济压力的增加,有关是否继续维持这些限制措施的争论也在不断加剧。当环保政策出现调整,曾经改善的环境是否会再次恶化?在发展与保护之间,又该如何找到平衡点呢?我们马上和 Ronan 一起走进今天的文章。