CAFE stds on the chopping block
NYT Good riddance. There is no way that the average fleet mileage would ever come close to those numbers anyway. Hopefully the ethanol scam will be cut at the same time.
Forum Discussion
The DEF and catalyst system is a bit of a different thing. There is a body of environmental research that points to CO2 as a greenhouse gas but it's not a totally concluded argument. Is it really the demon we make it out to be? Only time will truly answer that question.
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CO2 is certainly a greenhouse gas. That is easily shown to be the case. But it is a very weak greenhouse gas compared to many others. The greenhouse gas with the largest total affect is water vapor. Methane is another that is stronger.
The CO2 effect is best described by this analogy: imagine you have a room with a big window. You apply a coat of paint to it to block the light. But the one coat of paint doesn't block it all so you apply another. By the time you give that window the 4 or 5th coat all the light (aka infrared radiation for CO2 in certain bands) is absorbed and adding more coats of paint accomplishes little. CO2 works like that, as the concentration grows the effect gets smaller and smaller.
CO2 concentration has been going up for the last 15 years but temperatures have not.
Now that were are on this issue I predict the thread will quickly spiral out control and will be blocked by the moderator.
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CO2 is certainly a greenhouse gas. That is easily shown to be the case. But it is a very weak greenhouse gas compared to many others. The greenhouse gas with the largest total affect is water vapor. Methane is another that is stronger.
The CO2 effect is best described by this analogy: imagine you have a room with a big window. You apply a coat of paint to it to block the light. But the one coat of paint doesn't block it all so you apply another. By the time you give that window the 4 or 5th coat all the light (aka infrared radiation for CO2 in certain bands) is absorbed and adding more coats of paint accomplishes little. CO2 works like that, as the concentration grows the effect gets smaller and smaller.
CO2 concentration has been going up for the last 15 years but temperatures have not.
Now that were are on this issue I predict the thread will quickly spiral out control and will be blocked by the moderator.
