Availability: Some battery - electric vehicles can be bought or leased, and the offerings will expand as clean air policies come into effect. (peakoil.net)
She added that «no one can definitively» say how much gas prices have gone up because of the state's clean air policy. (scientificamerican.com)
For this study, Krauss and her colleagues analyzed state per capita alcohol consumption from 1980 to 2009 as a function of state price per pack of cigarettes, as well as smoke - free air policy scores, while controlling for secular trends and pertinent state covariates. (sciencedaily.com)