How much would drivers save if passenger vehicles already met fuel economy standards that will be in place in 2025?
The United States is already using less gas, so why would it turn to solutions that aren’t necessary to free itself from foreign oil?
What challenges does the widespread use of ethanol present to the environment — and to food prices?
What is the real story behind the additives in our gasoline?
What does the future hold for the production of biofuels and other alternative fuels?
How has Brazil become a prototype for promoting renewable energy?
What are the central questions facing the international community in 2005?