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September 10, 2008

Sustainable Off-grid Homes

Category: Green Building, Green Living, Water – Jabeen Quadir – 2:51 pm

Notwithstanding the references to “poisoned city water” and terrorists, this is an excellent video that demonstrates the integration of sustainable practices and technologies to create a mass-produceable off-grid home. The home is Robert Plarr and Michael Fulton’s Angel’s Nest/WorldNest Telsa research home in New Mexico.  It’s self-sufficient in energy, water, waste management and to some extent, food production. They use recycled and low-impact materials as well as improving indoor air quality.

They touch on a lot of different areas of sustainability and some of the controversial choices. I especially like their concept of creating a rainforest inside the home which is irrigated by treated grey water from the shower, creating humidity in the atmosphere, which, in turn, is extracted to generate drinking water. I haven’t seen their book, “The Secret of Sustainability” on Amazon yet, but it is available on the WorldsNest website.

 

 

September 7, 2008

The Meat-Lover’s Sustainability Dilemma

Category: Food, Green Living, Sustainability – Jabeen Quadir – 12:54 pm

Rajendra Pachauri, Chair of the Intergovernmental Panel on Climate Change (IPCC), is set to announce that “The UN Food and Agriculture Organization (FAO) has estimated that direct emissions from meat production account for about 18% of the world’s total greenhouse gas emissions. So I want to highlight the fact that among options for mitigating climate change, changing diets is something one should consider.”

By contrast, transportation contributes 13% of our greenhouse gas footprint.

Greenhouse gases are released throughout the meat production cycle, during land clearing, making and transporting fertilizer, feed antibiotics and hormones, burning fossil fuels in farm vehicles, and emissions from the animals themselves, which is a major proportion of gases emitted. Refrigeration and transportation of the meat for processing, packaging, distribution, retailing and to the consumer are also huge contributers.

Population growth and changing consumption patterns in developing countries will continue to increase pressure on global food supplies and food security. Livestock production has increased all over the world as demand for meat rises. The resulting increase in water scarcity, land degradation and soil erosion are key threats to productivity of farmland, not to mention the effects of loss of biodiversity associated with deforestation for high-maintenance agricultural land. Recent scientific studies have demonstrated that increases in global temperature adversely affects soil fertility, reducing crop yield. Water runoff from livestock farming can cause significant contamination and eutrophication of surface and ground water if the solid waste generated is not managed properly. Farming subisidies (like other poorly applied subsidy programs) tend to create an uneven playing field, further exacerbating the problem.

Possibilities for reducing greenhouse gas emissions associated with farming animals include genetically engineering strains of animals that produce less methane and ammonia. Organic farming is not a feasible option globally, due to the comparatively low productivity and yield.

We all know by now that eating less meat is better for your health. A price on carbon could cause the price of meat to rise, people would eat less, and, at the same time, reduce associated emissions of greenhouse gases and other adverse environmental impacts. This might just be the added incentive that ardent meat-lovers like me need to make another personal choice that contributes to the sustainability of our planet. Given the magnitude of the impacts, reluctantly, I’m adding eating less meat to my list of simple ways to reduce your carbon footprint.