Green Options

The destruction of the Earth’s protective ozone layer (and the growth of the “hole” in this layer over the South Pole) due to the action of human-made chemicals was the leading environmental issue of the last century (entering the public lexicon sometime in the mid 1980’s), and no doubt prompted wider concerns about “greenhouse” effects and global warming that occupy so much climate science reporting today. The main (or most publicized) culprit of this ozone loss was a chemical called [...]

Puff (a car exhaust monitoring device) is attached near the exhaust pipe of your vehicle. Its color changes dynamically, visualizing the amount of pollution your car is producing. Green indicates the lowest rate of pollution, red the highest. Karolina Sobecka, the artist/designer of Puff, explains: In this project, design is used as a strategy to explore the overlap between the material and immaterial worlds and spur discussion on the hidden social and psychological mechanisms behind the cultural use of accessories [...]

The Green Exchange was launched with bells and whistles a few months back. Last week the exchange traded for the first time and activity and volume it surpassed all expectations.

The Green Exchange is part of the New York Mercantile Exchange (NYMEX). During its first week, the equivalent of 1.59 million tons of carbon was traded. That volume makes the Green Exchange “the most successful launch of exchange-traded carbon contracts,” according to a report in the SunHerald.

Since last year, many of us have been eagerly awaiting the introduction of ‘clean-diesels’: the 2008-2009 models touted as having superior mileage and cleaner emissions than comparable gas models.

So where are they? Strangely, promised 2008 models didn’t materialize, and I had trouble finding more on the story. As far as I can tell, we’ll just have to look forward to next summer’s release of the 2009 VW Jetta TDI. The new Jetta gets similar mileage to older models, 50 mpg ( though VW engineers claim 30% better mileage under real world conditions). More importantly though, it’s the first diesel to meet the world’s toughest emissions standards, California’s Tier II, bin 5, earning it clean-diesel status. If you noticed the recent lack of diesel vehicles for sale (especially in CA), it was the direct result of reengineering emissions systems:

Although it won’t be wearing the “BlueTec” badge, the Jetta will be using emission-cleansing technologies developed under the cooperative formed by Audi, Mercedes-Benz and Volkswagen to make it 50-state legal. Most BlueTec vehicles control NOx emissions—one of the biggest environmental hurdles facing diesels, along with particulate matter—by injecting a urea-based solution into the exhaust system upstream from the catalytic converter, where NOx is then converted into nitrogen and water. The Jetta will instead use a NOx-storage catalyst, which is basically a reservoir that temporarily holds the noxious emissions, like a particulate filter, until they can be burned off during one of the engine cycles.