The new administration did not take long to do what the Bush Administration assiduously avoided for two years – finding that the emission of six greenhouse gases (GHGs) constitute "air pollution" which "endangers" public health and welfare given their effect on climate change. In her just-published proposed endangerment finding, Lisa Jackson, the new Environmental Protection Agency Administrator, also determined that emissions of four of these GHGs come from motor vehicle engines, and cause or contribute to that danger.
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