Solar cells, camera lenses, and LEDs could benefit from new antireflection coatings.
Carbon nanotubes could help make nanoparticle-based solar cells more efficient and practical.
Plasma turns waste to ethanol.
One of the largest solar energy plants in the world went on line in Portugal this winter.
Washington's growing interest could help make plug-in hybrids more affordable. The payoff: 150 miles per gallon.
A Canadian government decides that coal plants must clean up their act.
A direct method of converting methane into useful chemical compounds could reduce the release of the potent greenhouse gas at isolated oil fields.
New reactor technologies offer poorer nations cheap, safe, efficient power. Sanctions designed to prevent the proliferation of weapons impede their use. What would a better policy look like?
Fuel from grass and wood chips could be big in the next 10 years--if the government helps.
A new process turns the greenhouse gas into useful materials.