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A novel fuel-injection system achieves 64 miles per gallon.
With catalysts created by an MIT chemist, sunlight can turn water into hydrogen. If the process can scale up, it could make solar power a dominant source of energy.
A new type of engine could be relatively inexpensive.
A new Mazda model debuting in Japan gets its high fuel economy from an improved gas engine and a lightweight design.
A technology coming to Chrysler vehicles can improve the fuel economy of standard gasoline engines by 25 percent.
With fuel prices and concerns over emissions rising, the aircraft maker is accelerating the testing of emerging technologies.
Once thought too polluting, the two-stroke engine makes a comeback in advance of stricter fuel efficiency standards.
Fuel standards will likely be achievable but won’t encourage innovation.
GM plans to develop batteries with A123 Systems for its new electric vehicle.
A novel hybrid engine could slash fuel consumption.