Revolution! The very word suggests radical change, violence, upheaval and catastrophic damage. We most often associate revolutions with politics, in which one group or one locality takes action to separate itself from another.
But revolution also refers to events or activities that by their very nature change the way we live, think or act. For example, we refer to the beginning of the machine age as the Industrial Revolution. The advent of electricity, computers and motor vehicles were no less "revolutionary" in their effect on our daily lives as well.
Heavy-duty diesel engines are now facing their own revolution. Stimulated by new government mandates to make our air even cleaner, both federal and state legislatures are moving quickly in ways which will either radically change the heavy duty diesel engine or make it obsolete.
Despite major efforts since the early