LED Lighting are Green! (and Red, and White, and ...)
The next "generation" of lighting after Compact Fluorescent Bulbs (CFB) may be Light Emiting Diodes (LEDs).
"The new traffic lights you are seeing are made out of arrays of light emitting diodes (LEDs). These are tiny, purely electronic lights that are extremely energy efficient and have a very long life. Each LED is about the size of a pencil eraser, so hundreds of them are used together in an array. The LEDs are replacing the old-style incandescent halogen bulbs rated at between 50 and 150 watts. Most cities in the United States are in the process of replacing their incandescent traffic lights with LED units because of three big advantages:
- "LEDs are brighter. The LED arrays fill the entire "hole" and have equal brightness across the entire surface, making them brighter overall."
- "LED bulbs last for years, while halogen bulbs last for months. Replacing bulbs costs money for the trucks and people who do the work, and it also ties up traffic. Increasing the replacement interval can save a city big dollars."
- "LED bulbs save a lot of energy."
The light is on 24 hours a day, so it uses 2.4 kilowatt-hours per day. If you assume power costs 8 cents per kilowatt-hour, it means that one traffic signal costs about 20 cents a day to operate, or about $73 per year. There are perhaps eight signals per intersection, so that's almost $600 per year in power per intersection. A big city has thousands of intersections, so it can cost millions of dollars just to power all the traffic lights. LED bulbs might consume 15 or 20 watts instead of 100, so the power consumption drops by a factor of five or six. A city can easily save a million dollars a year by replacing all of the bulbs with LED units. These low-energy bulbs also open the possibility of using solar panels instead of running an electrical line, which saves money in remote areas.">>>> One additional "Green" advantage is that LEDs have NO MERCURY so do not contribute to air or water pollution when they are thrown out at the end of their operating life.
Via: How Stuff Works Link
"Windows:
The Prince of Wales, passed through Philadelphia on his way to New York City to receive an environmental award from former Vice President Al Gore.
Efficiency: "Superior insulating performance so you can downsize HVAC equipment. Use the sun to power electricity and hot water. Back it up with low-e windows, ENERGY STAR (R) appliances, high-efficiency air conditioning, boilers and radiant flooring. 
improvements. Argonne National Laboratory and the Idaho National Laboratory collaborate to evaluate PHEVs (Plug-in hybrid electric vehicle) and PHEV technology. Plug-in hybrid electric vehicles have a larger battery than hybrid electric vehicles (HEVs) and it is charged by the engine while in motion and from plugging into a standard 110 V electrical outlet when parked. Technical challenges must be overcome before PHEVs become more common, such as costs, battery size, performance, durability and safety. ... 
Why make your home more energy efficient? 
McDonalds Committed to Reducing their Impact on the Environment
"Replace a regular incandescent light bulb with a compact fluorescent light bulb (cfl)
"Move your thermostat down 2° in winter and up 2° in summer
"Clean or replace filters on your furnace and air conditioner 
"The implementation period will also give waste haulers, local governments, landscape services, composters and other entrepreneurs the ability to develop and provide a range of options for yard waste disposal. Green Businesses! 
Saving money, energy and reducing CO2 all with one simple task! And it is simple! By changing "one 60-watt incandescent light bulb with an equivalent 13-watt Compact Fluorescent light bulb, you can make a big difference."
"Hybrid hard disk drives meld the benefits of Flash technology with the high capacity and cost advantages realized by hard disk drive technology."
It happens to everyone. A new PC takes center stage on your desk and the old one .... 
Did you know that even a small change can make a big difference? 
Fun Facts from the EPA ...