Ener-G-Rotors' system harvests energy at lower temperatures.
Jet fuel made from an inedible plant will power an aircraft.
A project proves that millions of tons of the sequestered gas can be safely monitored.
The new Mini borrows a drive system from a high-performance electric sports car.
A more efficient generator could convert more of the wind's energy into electricity.
A silicon coating could boost the efficiency of solar cells.
Improved dyes and electrolytes could make the Grätzel solar-cell design more practical.
A system that detects gusts before they arrive reduces wear, boosts output.
Geologists discover that certain rock formations could sequester large amounts of carbon dioxide.
An engine from Lotus and Continental Powertrain consumes 15 percent less fuel.