Friday, January 30, 2009
Paint it white
His big idea is based on principles as old as the whitewashed villages that scatter the hills of southern Europe and North Africa. Turn enough of the world's black urban landscape white, he says, and it would reflect enough sunlight to delay global warming, and grant us some precious breathing space in the global struggle to control carbon emissions.
Together, roads and roofs are reckoned to cover more than half the available surfaces in urban areas, which have spread over some 2.4% of the Earth's land area. A mass movement to change their colour, Akbari calculates, would increase the amount of sunlight bounced off our planet by 0.03%. And, he says, that would cool the Earth enough to cancel out the warming caused by 44bn tonnes of CO2 pollution. If you think that sounds like a lot, then you're right. It would wipe out the expected rise in global emissions over the next decade. It won't solve the problem of climate change, Akbari says, but could be a simple and effective weapon to delay its impact - just so long as people start doing it in earnest. "Roofs are going to have to be changed one by one and to make that effort at a very local level, we need to have an organisation in place to make it happen," he says. Groups in several US cities, including Houston, Chicago and Salt Lake City, are on board with his plan, and he is talking to others.
full article here:
http://www.guardian.co.uk/environment/2009/jan/16/white-paint-carbon-emissions-climate
Tuesday, January 27, 2009
No Furnaces but Heat Aplenty in ‘Passive Houses’
read full article in the NYT
Tuesday, January 20, 2009
Planning Down: Economic Life Within Ecological Limits
Planning Down: Economic Life Within Ecological Limits
Vancouver, British Columbia, Canada
October 20-22, 2009
Planning Down places a large project of work before its conference community: to study the gaps between our economic and ecological practices and to build a portrait of a rich community and national life for the near-future in which ecology and economy are more successfully aligned.
In current public debates about climate change, energy transitions, sustainable urban development, and the vulnerability of key ecosystems, the economy is conceived as something apart from, and often in conflict with, environment.
Long-developing habits and prevailing economic thinking—essentially, a philosophy of growth—have fostered this view and allowed us to externalize the ecosystem impacts of consumption; and even now, such impacts are considered as a line item in the economic model.
Nature itself, of course, never was an externality and has been conducting full-cost accounting all along. Numerous thoughtful, expert voices are speaking and writing about this and offering a variety of forecasts and responses.
The conference will feature speakers and thought leaders who are some of the most imaginative and compelling voices on the scene who have been encouraging—in their various fields and perspectives—more conscious and more successful alignments between social practice and the systems of nature that support us. It will highlight positive North American and global examples of social arrangements and economic innovation as proof that a high quality of life and can be broadly crafted and sustained here.
FOREVER PLASTIC
Monday, January 19, 2009
Design Compass: Design for Future Climate
Designing for optimum energy performance means taking account of current weather and predicted climate data as early as possible in the design process.
Known as the 'Design Compass' this simple-to-use online tool helps building design professionals make sure that they take account of weather and climate-change-related information at the optimum stage in the design process.
The system is based on both the building services design stages and the RIBA Plan of Work.
All the user needs to do is decide where they are in the process, then within a few clicks they have access to a wealth of useful information and guidance.
The really great thing about the system is not just its simplicity, but the fact that this online resource can be easily updated as new data or requirements are introduced. CIBSE is also encouraging user feedback. A really 'intelligent' design tool.
The Design Compass can be accessed through www.cibsedesigncompass.org.uk.