Clean air important

Editor,
California has led the nation in clean air efforts for the last 50-plus years, including setting standards for automotive pollution and fuel economy levels more stringent than the national standards.
Those efforts cleaned up the air and have helped keep it clean in spite of the huge increase in population and traffic over that period. Those efforts have also resulted in huge improvements in auto fuel economy and decreased dependence on foreign oil.
The standards enforced by California ar...

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