Are your electric bills going through the roof? A solution just may be up there too:The roof is a great place to install solar collectors that convert the sun's energy directly into electricity.

Despite its nickname, the Sunshine State, Florida's heavy rains and pricey real estate mean it has never been considered a good place to set up big solar energy plants.

Some office towers and buildings have found a way to stay cool while keeping the AC to a minimum -- by using an energy-saving system that relies on blocks of ice to pump chilly air through buildings.

The Dutch city of The Hague on Wednesday announced plans to use geothermal heating -- water from a hot well deep underground -- to warm 4,000 households and several industrial buildings, as part of a plan to reduce greenhouse gas emissions.

Eben Bayer grew up on a farm in Vermont learning the intricacies of mushroom harvesting with his father. Now the Rensselaer Polytechnic Institute graduate is using that experience to create an organic insulation made from mushrooms.

The landmark glass terrarium known as Biosphere 2, which was built as a self-sustaining environment for humans 20 years ago, and the 1,650 acres surrounding the research site were sold to a home developer for $50 million.

More than 12 percent of the mahogany exported by Peru is logged illegally and most of the companies working in the sector are guilty, environmentalists said Wednesday in a report rejected by the government.

Powerful, loud mowers have been showing lawns who's boss for decades. But now contraptions that couldn't cut butter without a good shove are quietly -- really quietly -- making a comeback.

China must integrate environmental conservation into its development plans, officials said on Tuesday, as the environment ministry said pollution across the country was getting worse.

A referendum on whether to build a highway through a rare peat bog protected by European Union habitat laws failed to muster the necessary voter turnout and has been declared invalid, election officials said Monday.