The definition of renewable energy seems clear cut: The sun continues to shine, so solar energy is renewable. The wind continues to blow, so wind turbines churn out renewable power.

To the Editor:

Re

In the tense debate between energy security and environmental sustainability, Canada

As energy markets shrink, the same tactics that the Kremlin used to build Gazprom, the giant energy company, into a fearsome economic and political power that could restore Russian influence in the world are now backfiring, slashing both its profits and its influence.

The Environmental Protection Agency will oversee the cleanup of a huge coal ash spill that brought national attention to the environmental risks of storing the power plant byproduct. The agency

Walk around the floor of Lightfair International, the lighting industry

Citing financial and environmental reasons, Gov. David A. Paterson signed an executive order on Tuesday directing state agencies to phase out the purchase and use of bottled water at government workplaces.

PRESIDENT OBAMA and the other leaders at the Group of 20 meeting last month vowed to both pursue a

An impasse over coal-fired power plants in Kansas has ended, with the new governor, Mark Parkinson, agreeing to allow construction of a large coal plant in the western part of the state. A Kansas utility, Sunflower Electric, had hoped to build two large coal plants.

FOR the aviation industry, its fate inextricably linked to the price of oil, fuel conservation is more than environmentally sound

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