Eco-Investing: SustainableBusiness.Com

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The Sustainable Business web site covers news about eco-effective companies. It hosts a large list of the current stock prices of these companies, sorted by industry type (for example “Geothermal” or “Health Care”). The web site also has a “Green Investor” section, and lists the “20 Most Sustainable Stocks of 2004″. The editor, Rona Field, […]

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Book Review: Natural Capitalism

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Natural Capitalism is a book which dicusses similar ideas to those we present here at MetaEfficient. Written by Paul Hawken and Amory and Hunter Lovins of the Rocky Mountain Institute, the book starts off by explaining the authors’ theory of “natural capitalism”, but then it really picks up and provides a fascinating and well-referenced examination […]

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Solar Tubes: Very Efficient Heating

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Apricus makes a unique solar hot water heater which is 30-40% more efficient than flat plate solar systems. The secret to the performance is the use of cylindrical evacuated glass tubes to absorb the heat from the sun. Because the tubes are cylindrical, there is always a surface area that is perpendicular to the sun. […]

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Slow Sand Filters

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Slow sand filters are perhaps the most efficient means of producing clean drinking water. Slow sand filters rely on biological processes for their action rather than physical filtration or disinfection. They require no electricity, no chemicals and no filter changes. How is this possible? The secret is that slow sand filters work through the formation […]

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Composting Toilets: Large Scale Systems

Composting toilets can be a practical solution even for large businesses. We recently visited the Philip Merrill Environment Center, which is the headquarters for the Chesapeake Bay Foundation. It has a Platinum rating for Leadership in Energy and Environmental Design (LEED) from the U.S. Green Building Council. After taking a tour of their offices (about […]

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