Puerto Rico

While real estate prices are on the rise in some areas, there is one kind of land that no one wants no matter where it is: contaminated land.

These sites are usually former mines or landfills that have been identified as either contaminated or potentially contaminated.

Quick! What’s the most efficient renewable energy source? Solar? Wind? Geothermal? Well, according to Replenish Energy, the answer is microalgae.

The Cleantech Open recently announced the winners of this year’s competition at the third annual Cleantech Open Expo and Awards Gala in San Francisco. Dubbed the “Academy Awards of Clean Technology,” the event marks the grand finale of the Cleantech Open's yearlong business competition.

Egypt relies on the burning of fossil fuels to satisfy about 85 percent of its electricity requirements--which are growing at a rate of 8 percent per year. With the Arab country's fossil fuel supply expected to dry up within the next 30-50 years, policy makers are taking a close look at Wind Energy to calculate its potential.

They call it a decathlon, although there are no tracks to sprint, no javelins to throw. But there are hurdles to jump. That’s because it is the Department of Energy’s Solar Decathlon.

The St. Cloud Veterans Administration Medical Center is gearing up to become a pilot site for the Department of Veterans Affairs’ (VA) commitment to renewable energy.