The ongoing transformation of the energy system has largely been spurred by government policy and regulations.
By linking environmental sustainability and economic growth, Charlotte is showing the way.
As a new report makes clear, few of our urban areas are adapting to the changes that are revolutionizing the way we get around.
Regulating them will be a challenge for governments at all levels, but we're going to have to figure out how to do it.
As new ways of buying and selling energy emerge, the system of monopoly control is being challenged.
Lancaster, Calif.'s effort to build a seamless, integrated energy infrastructure points the way to long-term robustness and sustainability.
To attract young professionals, cities increasingly are going to have to think multi-modal.
Unmanned aircraft are coming, and they will raise a lot of issues for local governments to sort out.
CNG is a far less expensive and much cleaner fuel than gasoline or diesel, but purchasing new vehicles and building CNG fueling infrastructure is costly.