Here's one reason: If a cap-and-trade system is just around the corner, why not wait and introduce the whole system at once?

A cap-and-trade system, in theory, would set a price for a ton of carbon dioxide emissions.

And they said there would be no additional delays because once a cap-and-trade system is established, some operators will reduce emissions almost immediately.

The cap-and-trade system in Europe has some flaws because they didn't do a great job with the baseline.

The cap-and-trade system for sulfur dioxide, which causes acid rain, has been a big success.

Under a cap-and-trade system, these plants are likely to purchase pollution rights rather than cut emissions.

I am concerned that some in Congress and the administration are rushing to judgment on a cap-and-trade system to regulate carbon.

"But the lesson learned was that a cap-and-trade system can work."

Or a cap-and-trade system devised by the same guys who brought us Enron and the "credit crunch".

This speculated corruption highlights the downside of a cap-and-trade system.

Here's one reason: If a cap-and-trade system is just around the corner, why not wait and introduce the whole system at once?

A cap-and-trade system, in theory, would set a price for a ton of carbon dioxide emissions.

And they said there would be no additional delays because once a cap-and-trade system is established, some operators will reduce emissions almost immediately.

The cap-and-trade system in Europe has some flaws because they didn't do a great job with the baseline.

The cap-and-trade system for sulfur dioxide, which causes acid rain, has been a big success.

Under a cap-and-trade system, these plants are likely to purchase pollution rights rather than cut emissions.

I am concerned that some in Congress and the administration are rushing to judgment on a cap-and-trade system to regulate carbon.

"But the lesson learned was that a cap-and-trade system can work."

Or a cap-and-trade system devised by the same guys who brought us Enron and the "credit crunch".

This speculated corruption highlights the downside of a cap-and-trade system.