A large-scale tidal-power unit has started up in Northern Ireland.
Replacing sapphire with silicon could lead to more-affordable LEDs.
A catalytic process could improve thermochemical routes to ethanol.
An advance makes the conversion of heat to electricity practical.
NASA prepares to test a satellite that can be propelled by light particles from the sun.
A new process stores carbon dioxide in precast concrete.
Researchers have found a way to boost light from OLEDs.
Researchers consider plug-in hybrids charged by stationary solar arrays a better bet.
New technology could provide a way to harness wave energy.
A more efficient way to concentrate sunlight could reduce the cost of producing solar power.