Sentences with phrase «harmful auto emissions»
«Increased Sunday ridership has also reduced traffic on our roadways and harmful auto emissions in our atmosphere.»
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In the case of auto emissions, instead of current catalysts that are inactive below 200 degrees Celsius, Lewis» gold and silver nano - catalysts would be able to react at room temperature and help remove harmful emissions including carbon monoxide, nitrogen oxides and hydrocarbons.
Fifty years of auto - emission rules have had an impact, but peak levels of harmful ozone remain high