Flourecent bulb

If every household in the US replaces one light bulb with an Energy Star qualified compact flourescent bulb (CFL), it would prevemt enough polution to equal removing 1 million cars from the roads. CFL's provide high-quality light, cmart technology, and...

design, requiring less while lasting longer than typical incandescent bulbs.

How does a compact fluorescent bulb work??
How is it similar to an incandescent bulb??
How is it different to an incandescent bulb??
Are there any disadvantages to CFL's??

Need an answer ASAP???!!!

google it duh and Energy Star bulbs cost like $7 extra. we could just donate the money we dont use on buying fancy bulbs to a cause that helps reduce poultion.

ANSWERS
How does a compact fluorescent light bulb work?
Fluorescent light bulbs (including compact fluorescents) are more energy-efficient than regular bulbs because of the different method they use to produce light. Regular bulbs (also known as incandescent bulbs) create light by heating a filament inside the bulb; the heat makes the filament white-hot, producing the light that you see. A lot of the energy used to create the heat that lights an incandescent bulb is wasted. A fluorescent bulb, on the other hand, contains a gas that produces invisible ultraviolet light (UV) when the gas is excited by electricity. The UV light hits the white coating inside the fluorescent bulb and the coating changes it into light you can see. Because fluorescent bulbs don't use heat to create light, they are far more energy-efficient than regular incandescent bulbs.

Are there any disadvantages?
Yes. They cost more to buy.They can pose a fire hazard if the wrong bulb is used in the wrong place. They don't like power surges, so if your area is prone to electrical anomalies, you may not want to use them. And because of their mercury content, they should only be thrown out at a proper waste disposal site, an inconvenient stop for most.

sorry I could only answer two

Duh, all that other answer is old news.

A compact fluorescent lamp (CFL), also known as a compact fluorescent light bulb (or less commonly as a compact fluorescent tube [CFT]) is a type of fluorescent lamp. Many CFLs are designed to replace an incandescent lamp and can fit in the existing light fixtures formerly used for incandescents.

Compared to general service incandescent lamps giving the same amount of visible light, CFLs use less power and have a longer rated life. In the United States, a CFL can save over 30 USD in electricity costs over the lamp's lifetime compared to an incandescent lamp and save 2000 times its own weight in greenhouse gases.[2] The purchase price of a CFL is higher than that of an incandescent lamp of the same luminous output, but this cost is recovered in energy savings and replacement costs over the bulb's lifetime. Like all fluorescent lamps, CFLs contain mercury; this complicates the disposal of fluorescent lamps and causes a health risk when they are broken.[3]

CFLs radiate a different light spectrum from that of incandescent lamps. Improved phosphor formulations have improved the subjective color of the light emitted by CFLs such that the best 'soft white' CFLs available in 2007 are subjectively similar in color to standard incandescent lamps.[4]
http://en.wikipedia.org/wiki/Compact_fluorescent_lamp

COST:
In addition to the above savings on energy costs, the average life of a CFL is between 8 and 15 times that of incandescents.[21] While the purchase price of a CFL is typically 3 to 10 times greater than that of an equivalent incandescent lamp, the extended lifetime (fewer lamps to replace and reduced labor) and lower energy use will compensate for the higher initial cost in many applications.[22] A US article stated A household that invested $90 in changing 30 fixtures to CFLs would save $440 to $1,500 over the five-year life of the bulbs, depending on your cost of electricity. Look at your utility bill and imagine a 12% discount to estimate the savings.[23]

CFL's are pretty cheap these day, not the $7 as quoted.

Lets go to bulbs.com and check some prices:

Standard Old Fashioned 60 watt bulb: $0.84 cents each:
http://www.bulbs.com/eSpec.aspx?ID=11507Ref=%22Regular%22+(A-Shape)RefId=116Ref2=Incandescent+Bulbs

New Expensive CFL bulb 60 watt: $1.64 each:
http://www.bulbs.com/eSpec.aspx?ID=12357Ref=Spirals+%26+Bent+TubesRefId=46Ref2=Compact+Fluorescent+Screw-in

So in reality, the CFL costs $.80 cents more. Spend an additional 80 cents, and get a bulb that lasts up to 15 times longer, and uses 4 times less energy, plus the new lights give you the same warmth as the old fashioned lights that we love from our youth.

I think I know which one I'm choosing. Do you?