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April 30, 2007

Bioprocess For Monomer From Cellulosic Materials

Ceres and Rohm and Haas link up to research a cellulosic path to acrylic monomer that has synergy with biofuel production. This would enable traditional products, such as paint, to be derived from plant materials. ...
... "Funded by a $1.5 million research grant from the U.S. Department of Agriculture, the three-year project will determine if energy crops planted for cellulosic ethanol could simultaneously produce methacrylate monomers, a key raw material used in Bioprocess for monomer production to be researched by Ceresthe manufacture of many products including paint and coatings, building materials, and acrylic sheet and resins. The economics are attractive. More than 1.5 billion pounds of methacrylate monomers are produced annually in the United States, a market worth $780 million. Though in its early stages, the science looks promising. Molecular biologists and biochemistry experts at Ceres say that some plants naturally produce compounds similar to methacrylate monomers, but do not necessarily accumulate them in extractable forms or quantities. They believe it may be feasible to alter the way plants produce these compounds so that they can be extracted from the dried stalks, stems and leaves before these are fed into biorefineries producing ethanol from cellulose. " ...

Via Rohm and Haas: Bio-Products Research


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April 26, 2007

Hybrid Race Competition Drives Efficiency Innovations at Dartmouth

Formula Hybrid competition challenges students to design, build, and race formula racecars with gas-electric hybrid drive trains. Competition will be held May 1-3, 2007, at New Hampshire International Speedway. ...
... "One guideline is fuel efficiency: A Formula Hybrid vehicle must use at least 15 Hybrid race carpercent less gasoline than a comparable regular formula racecar operated under the same conditions, a goal many of the entries are expected to surpass, Fraser said. Another guideline involves recycling: Unlike the Formula SAE competition, Formula Hybrid teams are encouraged to incorporate used parts of other racecars rather than build everything from scratch. " ...

Via Dartmouth News: Dartmouth Engineering Competition


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April 25, 2007

Global Warming Awareness: Flick-Off Branson Collaboration

Branson collaborates with coalition to launch Canadian awareness program, called Flick-Off, to educate the public about the devastating effects of global warming and to motivate people into action. ...

Flick Off

... "Virgin Mobile, MuchMusic, Roots, Environmental Defence and the Province of Ontario have joined forces to create a dynamic coalition to communicate a simple message: it's no longer enough to worry about global warming, it's time to take action and encourage everyone to join in. " ...

Via FlickOff: Sir Richard Branson & Ontario Environment Minister Laurel Broten Headline Coalition to Fight Global Warming


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April 24, 2007

Branson on Greentech Investing: Sees Profits Balanced With Virtue

Sir Richard believes that profitability and social responsibility can coexist from investments in greentech and cleantech. ...
... "I believe we need to make a virtue out of investing in clean technology and Saab focuses on biopowerrenewable energy and not be ashamed to want to make profits out of it, Sir Richard told the Saab website. For too long, environmentally-friendly technology and issues about the environment have been seen as a corporate social responsibility issue and not an opportunity to create new wealth in the future. " ...

Via Saab BioPower: Saab BioPower and Sir Richard Branson


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April 23, 2007

NYC Earth Day Commitment

Mayor Bloomberg shares a long list of initiatives that will drive NYC to its carbon-neutral goals. New York plans to leverage solar technology in buildings, first through demonstration, followed by Mayor Bloomberg celebrates NYC's Earth Day with major commitment to neutral carbon emissionsadoption enabled by incentives. ...
... "Support the construction of the city's first carbon neutral building, primarily powered by solar electricity; Increase the use of solar energy in City buildings through creative financing; Work with the State to eliminate barriers to increasing the use of solar energy in the city; " ...

Via NYC Mayor Bloomberg: NYC Mayor Bloomberg Makes Significant Commitment on Earth Day


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April 22, 2007

China GreenTech Enables Entrepreneur Success

Scientists achieves success with personal investment in solar technology as China seeks sources of green energy. ...
... "Shi is the leader of an emerging group of Chinese entrepreneurs who are striking it rich by meeting fast-growing demand in China and abroad for cleaner power. " ...
Via Seattle PI: China Solar
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April 19, 2007

Automobile CO2 Emissions

Neat pic of CO2 emissions from auto, used to support WWF marketing campaign.  ...

 CO2 Emissions from car

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CO2 Eco Action Tip .... #3



 Buying Recycled Products Makes sense - right?  After all using recycled materials instead of new materials results in less energy expened and less waste. 

A win-win!


What kinds of materials can be recycled ...?

* Aluminum,

* #1 and #2 Plastics,

* Glass bottles (not mirrors, lightbulbs, and / or plates)  


...are commonly collected along with trash in many municipalities.  Many public areas like parks, shopping centers, train stations, etc have facilities for recycling.

For example ....

 - In Philadelphia, Pennsylvania, SEPTA, the regional rail carrier, has bins in the 3 center city stations for newpaper recycling. 




CO2 Action Tip Via:   WholeFoodsMarket.com  Link

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CO2 Eco Action Tip .... #1

Eco Action Tip


Clean Green!  Sounds great.  But ...

>>> How do I do it?  What is involved?


Here are some ideas:

* use the least toxic cleaner that will do the job or IDEALLY a non toxic one
* use all materials if possible rather than throw away
* check the label to determine how to dispose of unused material
* use towels rather than paper towels (waste issue to be balanced against germs ...)
* if buying paper towels buy those made from post consumer recycled paper
* look to green or non toxic cleaning materials



CO2 Action Tip Via:   WholeFoodsMarket.com  Link



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April 18, 2007

Yahoo Carbon Neutral Plan and Mindset

David Filo, Yahoo, commits company to carbon neutral goal through investment into portfolio of projects to reduce greenhouse gas emissions. Yahoo is building on an existing green track-record and will take reductions seriously, not just look to offset. Great philosophy! ... David Filo, Chief Yahoo
... "We've been focused on this area for a while now. Our commute alternatives program has been recognized annually by the EPA since 2001 for incentives like Wi-Fi enabled biodiesel shuttles, bike lockers, carpool matching, and sizeable public transit subsidies. Our recycling program keeps about 180,000 pounds of materials out of landfills each year. We use renewable power, hydroelectric energy, and passive cooling at our various facilities and data centers. And green-minded Yahoos have launched sustainability-focused products ... " ...

Via Yodel Anecdotal: Carbon FootPrint into ToePrint


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A Greener Shoe

Green Toe Shoes sustainable raw materials
All natural shoes.  Sounds good.

What goes into an all natural shoe and why is it so good for the planet?
>>>  Read on and find out!


green toe shoes

" ... About a gazillion pairs later... give or take a few... weve managed to learn a few things. ... And none more important than this: HOW we make our shoes is just as important as WHY we make them. ... finding more sustainable ways of doing business so we can make a gazillion more."

" ... we're committed to making our product 100% sustainable.  Finding materials and processes that make our products sustainable is a method we call Green Toe."

In addition to using the materials in the graphic to the right ... they also ...

* carpool
* recycle most plastics, paper, cardboard and aluminum
* use biodegradable cleaning products and more
* and more ... see the ecoETHICS page   Link



Via:  Simple Shoes   Link 


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Green Ideas from Green TV


Sundance Challel: Green Sundance
Premieres April 17th, 2007 @ 9 pm EST. 

Presenting  "the GREEN: big ideas for a SMALL PLANET (TM)".

Robert Redford, has announced the launch of Sundance Channel Green. ... will "present original series and documentary premieres about the earth’s ecology and concepts of 'green' living that balance human needs with responsible environmental stewardship."

"Programming ... will include:"

"1. Original Series: Change Agents: a high energy, story and character-driven documentary series about the people and projects that are on the front lines of environmental sustainability and innovation."

"2. Interstitial Series: Sundance Channel will launch several interstitial series that will highlight a range of environmental issues and offer viewers innovative suggestions to effect change in their own lives."

"3. Documentaries: The block will feature compelling feature length documentary premieres and news specials on environmental subjects."


Tune in to Episode 1:  A Crude Awakening.


The Sundance Channel   Link


Via:  Treehugger.com   Link 

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April 17, 2007

NYC Carbon Footprint

Mayor Michael Bloomberg discusses state of NYC carbon footprint, notes opportunities and challenges, and sets stage to unveil additional plans on Earth Day. ...
... "The inventory had a mixture of good and bad news. It showed that the city NYC New York City Skylineproduced 58.3 million metric tons of greenhouse gases in 2005, which represented only about 1% of all emissions produced in the United States. The energy consumed by New York's roughly 950,000 buildings was responsible for almost 80% of those greenhouse gases, while most of the remaining emissions were produced by cars, trucks, and other vehicles. However, the city's emissions have increased by approximately 9% over the previous 10 years - and that's a trend we've got to reverse. " ...

Via NYC: Mayor Bloomberg on NYC Greenhouse Gas Emissions


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April 16, 2007

Renewable Diesel Fuel From Animal Fats: Conoco Phillips and Tyson Collaborate

Conoco-Phillips and Tyson collaborate to develop transportation-grade diesel fuel from the by-product of beef, pork and poultry processing: animal fat. The animal fats will be formulated with petroleum feedstocks, leveraging Conoco-Phillips' proprietary thermal depolymerization process technology. The process was piloted in the Conoco-Phillips Whitegate Refinery in Ireland and used for commercial production of renewable diesel from soybean oil in late 2006. The result is a high-Tyson will turn animal fats into biodiesel with Conocoquality diesel fuel that satisfies ultra-low-sulfur diesel standards. By adding animal fat, the fuel's ignition properties are improved. The facility investments will enable Conoco Phillips to perform flexible processing of animal fats and vegetable oils in the production of diesel. Not only is this good for the environment, Conoco-Phillips achieves a source of renewable feedstock for its fuel production and Tyson could see a measureable improvement in annual earnings when at target production levels. ...
... "Over the last year, the companies have been collaborating on ways to leverage Tyson's advanced knowledge in protein chemistry and production with ConocoPhillips' processing and marketing expertise to introduce a renewable diesel to the United States. Tyson will make capital improvements this summer in order to begin pre-processing animal fat from some of its North American rendering facilities later in the year. ConocoPhillips also will begin the necessary capital expenditures to enable it to produce the fuel in several of its refineries. The finished product will be Conoco Phillips Whitegate Refinery processes biodieselrenewable diesel fuel mixtures that meet all federal standards for ultra-low-sulfur diesel. Production is expected to ramp up over time to as much as 175 million gallons per year of renewable diesel. " ...

Via Conoco-Phillips: Strategic Alliance To Produce Next Generation Renewable Diesel Fuel


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April 15, 2007

Woodchip Biomass Plant Acquisition

Japanese company acquires wood chip biomass plant and build its green-tech portfolio. ...
... "Marubeni already owns and operates a 18MW wood chip biomass power plant Marubeni expands in biomass powerlocated in Fairhaven, CA. Marubeni believes its experience and expertise in biomass power generation enables it to achieve the operation with high efficiency. Marubeni aims to increase its renewable energy portfolio and expand energy supply business with distributed generation facilities to more than 120 MW in North America by 2010. " ...

Via Marubeni: Marubeni Acquires Wood Chip Biomass Power Plant in US


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April 12, 2007

A New Look at Off Shore Windmills

Deepwater Floating Windmills

A Given:  Wind Power is one solution to our energy needs.
Good:  Off Shore Windmills
Better:  FAR off shore Windmills where the winds are stronger and the windmills are not visible?

A Problem:  NIMBY (who can blame them?)

The Solution:  Part windmill.  Part floating platform. 


"Offshore wind turbines are an excellent source of power that could potentially serve hundreds of thousands of consumers ... (using) floating platforms hundreds of miles out to sea, where the winds are even stronger? That is where Paul D. Sclavounos comes in. The MIT professor of mechanical engineering and naval architecture spent decades designing and analyzing large floating structures for deep-sea oil and gas exploration."

" ... Their design calls for a tension leg platform, a system in which long steel cables, or “tethers,” connect the corners of the platform to a concrete-block or other mooring system on the ocean floor. The platform and turbine gain their support from buoyancy."

"... could work in water depths ranging from 30 to 200 meters, Sclavounos said. In the Northeast, they could be 50 to 150 kilometers from shore. And the turbine atop each platform could be big, which is an economic advantage in the wind-farm business. The MIT-NREL design assumes a 5.0 megawatt (MW) experimental turbine now being developed by industry. (Onshore units are 1.5 MW; conventional offshore units are 3.6 MW.)"

"  ... Computer simulations show in hurricane conditions the ... bottom of the turbine blades would remain well above the peak of even the highest wave."

"... Because of the strong offshore winds, the floating turbines should produce up to twice as much electricity per year (per installed megawatt) as wind turbines now in operation. And because the wind turbines do not permanently attach to the ocean floor, they are a movable asset. If a company with 400 wind turbines serving the Boston area needs more power for New York, it can unhook some of the floating turbines and tow them south."




Via:   ISA     Link  and
         MIT    Link


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April 11, 2007

FuelCell Hybrid Bus Hits Connecticut Streets

Fuel cell bus is entering CTTRANSIT service to operate on the downtown Hartford Star Shuttle route and will eventually be used on other routes that serve the Hartford and surrounding towns. ...
... "CTTRANSIT and project partners will gather and analyze data on fuel economy, CT Transit deploys fuel cell busmaintenance costs and reliability. The many benefits of this fuel cell-powered hybrid bus include zero harmful tailpipe emissions, smooth and quiet operation and fuel efficiency that is expected to be two times better than a standard diesel-powered bus. The clean operation means it will have an immediate positive impact on street-level emissions. These benefits are reflected in the distinctive green, leafy graphics on the sides of the bus. " ...

Via United Technologies: Fuel Cell-powered Hybrid Bus Begins Service In Hartford


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April 10, 2007

Battery Research For PHEVs

DOE funds research on batteries for PHEVs. ...
... "DOE and USABC seek to identify electrochemical storage technologies capable of meeting or approaching USABC's criteria for performance, weight, life-cycle, and cost. Other considerations include the potential to commercialize proposed battery technologies and bring them to market quickly. DOE's Office of Energy Efficiency and Renewable Energy's Vehicle Technologies Program leads the Department’s efforts to bring PHEVs to market and works with industry to develop advanced transportation technologies that will reduce the nation’s use of imported oil. The development of a lower cost, high-energy battery has been identified as a critical pathway toward commercialization of PHEVs. " ...

Via Department of Energy: $14 Million to Develop Advanced Batteries for Plug-in Hybrid Electric Vehicles

Goals for Advanced Battery Development for Plug-in Electric Vehicles: "In collaboration with the U.S. Department of Energy (DOE), USABC will award contracts to developers selected that have electrochemical energy storage technologies capable of meeting or approaching USABC's performance, weight, life-cycle and price criteria, plus near- and long-term technical readiness goals for high power-to-energy-ratio and high energy-to-power-ratio batteries, respectively. "


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April 08, 2007

Clean Coal Tech Pilot in Florida FutureGen

FutureGen clean-coal plant will deliver near-zero emissions through gasification, carbon sequestration, and scrubber technologies.  The FutureGen alliance is a consortium of global energy companies.  ...

... "The Florida plant will demonstrate an advanced power generation system that uses a form of integrated gasification-combined cycle technology and state-of-the-art emission controls. The transport gasifier technology to be demonstrated at the plant FutureGenis unique among coal gasification technologies in that it cost-effectively uses low-rank coals, as well as coals with a high moisture or high ash content. These coals comprise half of the proven U.S. and world reserves. Integrated gasification combined-cycle technology will be at the heart of FutureGen, a $1 billion prototype power plant that will integrate a suite of technologies to slash emissions while producing both electricity and hydrogen from coal. Emissions from the plant will be reduced almost to zero, solid wastes will be converted to useful commercial products, and as much as 90 percent of the CO2 produced by the plant is expected to be captured initially. " ...

Via Department of Energy: Clean Coal Plant in Florida


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April 07, 2007

RFP for Wind Energy

American Electric Power publishes two requests for proposals that seek to purchase wind energy on long-term contracts. Bids are due April 30. These purchase agreements are part of AEP strategy to Appalachian Powerbetter manage greenhouse gas emissions through a portfolio of techniques. ...
... "The requests for proposals (RFP) are for up to 260 megawatts of wind energy for AEP’s Appalachian Power utility unit and up to 100 megawatts of wind energy for AEP’s Indiana Michigan Power utility unit. The 360 megawatts of wind energy included in the two RFPs equals almost 60 percent of the currently installed wind generation in the PJM Interconnection, a regional transmission organization that covers all or parts of 13 states ranging from Illinois to North Carolina to New Jersey. " ...

Via AEP: 1,000 megawatts of new wind energy by 2011


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Biomass Scrap Wood Put to Good Use

Factory scrap wood used for energy instead of waste. ...
... "Practical Environmental Solutions Inc. turns the scrap wood from a Fairfield broom maker into inch-long Biomass Power Pellets. " ...

Via DesMoinesRegister: Biomass Fuel


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Climate Change Report

In the 2007 report, scientists believe that the changes in climate being observed around the globe are linked to the increase in greenhouse gases (CO2) created by industrial activity and Greenhouse Gastransportation. The group provides warning of the impact to flora, fauna, and weather conditions. ...
... "The report assesses the latest scientific, environmental and socio-economic literature on Impacts, Adaptation and Vulnerability. It provides a comprehensive analysis of how climate change is affecting natural and human systems, what the impacts will be in the future and how far adaptation and mitigation can reduce these impacts. The report also contains chapters on specific systems, sectors and regions. " ...

Via Intergovernmental Panel on Climate Change (IPCC): Climate Change 2007


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April 06, 2007

Green Grid Data Center Efficiency Focus

Industry consortium will collaborate to increase the energy efficiency of data centers. ...
... "End users and technology suppliers are encouraged to become members of The Green Grid to help drive the creation of platform-neutral specifications and metrics. The Green Data Center is the goal of this consortiumThe Green Grid's membership structure includes Contributing and General Member levels. General members will have access to all technical documentation produced by The Green Grid, access to intellectual property licensing, and opportunities to attend events. Contributing members will have all the above benefits and be eligible to join technology working groups, review technology documentation at each phase of development and directly contribute to shaping future consortium direction. " ...

The Green Grid


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Ford's EScape Hybrid - Eco Friendly Seats


Ford Escape Hybrid


One of the UNIQUE features of Ford's Escape Hybrid is the seats.


Ford Bold Moves Logo

"The seats in Escape Hybrid's innovative earth-friendly seat fabric made from 100% post-industrial waste plastics and polyester fibers that would have ended up in landfills otherwise. More than simply "green," the durable, comfortable and stylish nature of the material also makes it a perfect fit for Escape Hybrid."



Via:  Ford.Com   Link 

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April 05, 2007

Google Bus Fleet Eases Employee Commutes .... and Reduces Pollution

Google Logo


Google is well known for its innovation in Search Engines and web tools. It is also well known for the many employee perks ... 

What most people do not know is that they are helping to reduce road congestion and traffic by providing bus service to many of the employees in southern California.Google Bus Service Area

In fact - Google operates a LARGE bus fleets.  Some details:

" ... ferries about 1,200 employees to and from Google daily — nearly one-fourth of its local work force — aboard 32 shuttle buses ... Bicycles are allowed on exterior racks, and dogs on forward seats, or on their owners’ laps if the buses run full."

"The shuttles, which carry up to 37 passengers each ... 132 trips every day to some 40 pickup and drop-off locations in more than a dozen cities, crisscrossing six counties in the San Francisco Bay Area and logging some 4,400 miles. They pick up workers as far away as Concord, 54 miles northeast of the Googleplex ... system’s routes cover in excess of 230 miles of freeways, more than twice the extent of the region’s BART commuter train system, which has 104 miles of tracks."


Via:  Google.Com     Link     and    The New York Times March 10, 2007     Link





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Whole Foods Market uses 100% Wind Power

 Whole Foods

 In addition to using Solar Power (see GreenTechnolog Blog) Whole Foods Market is big on Wind Power.  Wind Power

"In January, 2006, we made a landmark purchase of renewable energy credits from wind farms to offset 100% of the electricity used in all of our stores, facilities, bakehouses, distribution centers, regional offices and national headquarters in the United States and Canada. This is the largest wind energy credit purchase in the history of North America and makes Whole Foods Market the only Fortune 500 Company purchasing wind energy credits to offset 100% of its electricity use."


Via:  WholeFoodsMarket.com   Link

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April 04, 2007

Green Auto Leadership: Honda and Toyota Blank Detroit

Union of Concerned Scientists ranks the greenest automakers and for the fourth time in a row, Honda leads the rankings as the greenest. Toyota is a close second, after reducing its global warming pollution. And, Detroit automakers bring up the rear. ...

... "MacKenzie analyzed the performance of 10 classes of vehicles produced by the Union of Concerned Scientists Name Greenest Automakerseight automakers which comprise 96 percent of the U.S. car and light truck market in model year 2005. Each automaker was rated on how its vehicles compared to the industry average on global warming and smog-forming pollution. Cars and light trucks account for 25 percent of the nation's global warming pollution and 20 percent of its smog-forming pollution.

Honda and Toyota had better-than-average global warming scores in every class in which they competed. Despite producing pickup trucks and large SUVs, Toyota's use of emissions-cutting technology across its entire fleet helped it to pull up just behind Honda, which did not compete in these vehicle classes. " ...

Via Union of Concerned Scientists: Green Automaker Rankings


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April 03, 2007

Whole Foods Market uses Solar Power


Whole Foods Market - Logo

Whole Foods Market has committed to using Solar Power at stores in their Southern Pacific, Northern California and North Atlantic Regions. 

"... Brentwood is using solar energy as 24 percent of its power source ... will produce 62,370 kilowatt hours, approximately equal to 20 residential homes, result in more than 140,000 lbs per year of CO2 emissions avoided, the equivalent of removing 10 cars from the roadways, and reduce the equivalent of more than 58 tons of coal being burned."


"In March 2002 Whole Foods Market Berkeley became the first major food retailer to introduce solar energy as a primary lighting power source ... while increasing building thermal insulation and extending the life of the roof."  Whole Foods Market - Berkley, California store solar panels

"... In addition to an attractive amortization period, the system will produce and save more than one million kilowatt hours over 25 years and will result in more than 1,060 tons of CO2 emissions avoided, the equivalent of removing 285 cars from the roadways."

"The combination of solar power and efficient lighting, along with a Duro-Last Energy Star® roof system with a solar reflectance of more than 86%, will reduce both peak and base load electricity demand. The net effect will be reduced load on the local electric substation, especially during peak summer hours."


"Our Edgewater, New Jersey store ... installing solar panels made by BP Solar on our facility's roof.  ... will meet more than 20 percent of Edgewater store's needs. The new ... system will produce and save more than 2.2 million kWhs over 20 years resulting in more than 1,650 tons of carbon dioxide (CO2) emissions avoided, the equivalent of removing 440 cars from the roadways, and reduce the impact on our country's power grids.


Via:  WholeFoodsMarket.com    Link



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April 02, 2007

Vehicle Tailpipe Emissions: Legislative Mandate Required

U.S. Senators Feinstein, Collins and Snowe target reduction of carbon dioxide emissions from the use of motor vehicles through legislative mandate, setting a national standard. ...
... "So, it's time for the auto industry to improve vehicle technologies and reduce tailpipe emissions. The bottom line is this: emissions from the use of motor vehicles are roughly one-third of our nation's greenhouse gas problem. So, it's critical that we reduce carbon dioxide emissions from this sector. Mandating automakers to reduce tailpipe emissions and requiring fuel providers to increase the supply of low-carbon fuels would cut carbon dioxide emissions from the use of motor vehicles by as much as 22 percent below projected levels by 2030. " ...

Via Senator Feinstein: Measure to Reduce Carbon Dioxide Emissions from the Use of Motor Vehicles


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Green Flower Pots on the Way

cow pot

Green Flower Pots?  What dos that mean to you?  To me it means a flower pot made out of a recycled material - preferably not a plastic.

In my time as a backyard gardener I have seen #2 (HDPE or High Density Poly Ethylene), #5 (PP - Polypropylene) and unmarked plastics used as flower pots.  The #2 are easily recycled - the #5 take a little more effort (see a future blog entry for details).  Basically you need to find someone that will hold them until another gardener takes then to reuse them .... or a site that will recycle #5 PP.  Some are even made of paper formed into a "6-pack" container.CowPots

Well -- something better is now available. An there is a HUGE supply of raw material .... Cow Poop. 

"Matt Freund's CowPot (see www.cowpots.com for details) - made of genuine Yankee cow manure - is already available, a set of 15 small ones selling for $11.95 at Gardener's Supply Co. of Burlington, Vt. (www.gardeners.com). They're also sold at Agway and True Value stores."


Via:   Philly.com   Link    and    Cowpots.com    Link

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April 01, 2007

Energy Down For Earth Hour

Sydney, Australia collaborates for Earth Hour to switch their lights out and have a positive impact on Sydney Australia celebrates Earth Hourenergy consumption. ...
... "In the city centre alone energy consumption fell 10.2 per cent between 7.30pm and 8.30pm, saving 24.86 tonnes of carbon dioxide from being released into the air. " ...

Via Sydney Morning Herald: Sydney Earth Hour


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