Quote:
Originally Posted by GMAN
I used to live in California. Pollution has been bad in that state for decades. When I lived in the state there weren't nearly as many trucks as today and pollution seemed to be worse then than now. I find it hard to believe anything any of these people say about pollution considering their past track record. First they tried to convince us that we were heading for another ice age. That fell short then they decided that we were suffering from global warming. That fizzled so we are back to an ice age. There is no proof that man has caused or even contributed to global warming. Yet, they have created an entire industry around global warming. Most people are convinced that global warming exists even though there is no conclusive proof. If it did exist there is no proof that man was in any way responsible. These people waste hundreds of billions of dollars each and every day.
I agree with you, but nobody can deny our contribution to smog and smog related health hazards.
You also have to consider one truck from the mid 80's puts out as much NOx(smog forming) as several hundred new trucks. Also, emissions do not always form smog where they are emitted, sometimes it travels a few hundred miles then converts to o3(low level ozone, or smog). It depends on the weather. Heat and sunlight is needed.