Some still question the vehicle's chances of success, despite a boost from India.
Fuel standards will likely be achievable but won't encourage innovation.
Research shows that silicon is as efficient as pricier materials.
Boston-Power ramps up production of its long-lasting battery.
Nanowire electrodes could improve the performance of electric vehicles.
Advanced biofuels, more-efficient vehicles, and solar power top the most notable energy stories of 2007.
A portable system converts biowaste into jet fuel and diesel for the military.
Researchers are harnessing solar energy to convert carbon dioxide into carbon monoxide, which can be used to make fuels.
Helium isotopes reveal hidden stores of geothermal energy.
As the primaries near, the presidential candidates are calling for similar, ambitious growth in ethanol biofuel.