Expanding markets for clean and efficient technologies will increase energy security and help reduce greenhouse gas emissions. But many promising technologies are still too expensive or face other obstacles to commercial deployment. Governments need to consider deployment policies to create...

Which alternative motor fuels will be in common use tomorrow? Which criteria should be used to assess them? No simple answers exist. Complex trade-offs are involved in the decision-making process. But the most important ingredient for making informed choices is sound information produced by a...