Global energy creation and use computations show existing wind, solar, geothermal, hydrogen, wave, and tidal power could run the world.

A stiff tax on gasoline would finally create a market for cars with better gas mileage, argues the head of the iconic automotive media company.

LED maker Cree develops a bulb, not yet commercially available, that it hopes will set the performance standard for 60-watt incandescent replacements.

LED maker Cree develops a bulb, not yet commercially available, that it hopes will set the performance standard for 60-watt incandescent replacements.

Energy Secretary Steven Chu sheds light on how the White House defines "clean-energy sources" as it seeks to push ahead on energy innovation to boost the economy.

Search engine lets consumers search for cheapest available carbon-friendly flight options, but for some flights that's a big price jump.

Automaker and filmmaker partner on Star Wars ads for 2012 Passat, but with spy photos already out, will the ad "overhype" the still-under-wraps new Beetle model?

The energy software company acquires M2M Communications to expand its grid efficiency services through demand response in the agriculture industry.

In his State of the Union speech, the president delivers a centrist message, saying nuclear power, clean coal, and natural gas are needed to meet a goal of 80 percent clean energy.

Rural areas outside the reach of mobile phone network will get off-grid, solar-powered base stations designed for low-cost and battery storage.