One photovoltaic wire could power a sensor; arrays could yield cheaper electricity.
Gregory Stephanopoulos explains challenges in converting biomass to biofuels.
The global culture of valuable, fresh thinking.
Making ethanol from corn is expensive. Better biofuels are years away from the gas tank. Farmers are reluctant to change their practices. But do we really have any alternative to biofuels?
Nanosolar is shipping printed solar cells.
Researchers are harnessing solar energy to convert carbon dioxide into carbon monoxide, which can be used to make fuels.
Long-awaited improvements to fuel-economy standards will likely be enacted soon.
Helium isotopes reveal hidden stores of geothermal energy.
As the primaries near, the presidential candidates are calling for similar, ambitious growth in ethanol biofuel.
New legislation is a positive step toward solving looming energy problems.