"I've always wondered why we pave our streets to begin with."
Dramatic reduction in particulate air pollution.
There have been programs to reduce air pollution in towns along the US - Mexico border. Folks on the US side paid to have roads paved in Mexico so it would reduce pollution--it was cheaper than taking incremental steps on the US side.
Dramatic reduction in particulate air pollution.
There have been programs to reduce air pollution in towns along the US - Mexico border. Folks on the US side paid to have roads paved in Mexico so it would reduce pollution--it was cheaper than taking incremental steps on the US side.