USA – physicists turn waste heat into electricity

Physicists have developed a way to turn heat into sound and then electricity, suggesting a new way to effectively recycle waste energy. “We are converting waste heat to electricity in an efficient, simple way by using sound, ” said the scientist who led the effort, Orest Symko of the University …

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Canada – Government encourages use of “green” office furniture

Three Canadian firms are helping the federal government be more environmentally friendly after qualifying to provide the government with remanufactured office furniture. With a combined value of US$600,000, the Regional Master Standing Offers awarded to the three firms will help the government play a role in keeping office furniture out …

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Burundi: urban waste becomes urban fuel

Several months ago, residents of the Burundian capital, Bujumbura, were struggling with disposal of household waste. IPS Inter Press reports that the Municipal Technical Services (Services techniques municipaux, SETEMU) weren‘‘t able to deal with all the refuse — and health conditions in the city were deteriorating. Fast forward to June …

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World – environmental impacts of tourists

Tourism, as one of the world‘‘s largest economic sectors, places direct and indirect pressures on species and habitats and thereby threatens their conservation. In addition, it may disturb wildlife and increase pollution caused by transportation. These potential impacts on nature and biodiversity are reinforced by the fact that tourists tend …

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USA – new bricks made from coal plant waste

New research suggests bricks made out of the ashes from coal fires are both structurally and environmentally solid. UPI reports that the alternatives to clay bricks, which take more energy to produce, are also cheaper, LiveScience reported. Traditional clay bricks need extreme heat for production, while coal ash bricks can …

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