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The EPA and Clean Air Act · US History

The 'Endangerment Finding' issued by the EPA in 2009 concluded that:

  1. The bald eagle population had officially been declared extinct nationwide
  2. Greenhouse gases threaten the public health and welfare of current and future generations
  3. Nuclear energy was determined to be too dangerous to use anywhere in the U.S.
  4. Lead found in household paint and old plumbing was declared the only significant environmental threat
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Correct answer: Greenhouse gases threaten the public health and welfare of current and future generations

This finding followed a Supreme Court ruling (Massachusetts v. EPA) that greenhouse gases are pollutants under the Clean Air Act. It provided the legal basis for the EPA to regulate carbon dioxide emissions from vehicles and power plants.

Difficulty: Medium Question 6 of 20

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