New Jersey's lawmakers are poised to impose new pollution penalties on power companies -- the first step in determining who pays for contributing to global warming and who profits from preventing it. By year's end, the Legislature is expected to approve a plan requiring the companies to pay for the greenhouse gases they produce, a charge that could amount to $70 million or more each year. The system is designed to give companies an incentive to cut emissions. But in the short run, at least, the price of polluting is likely to be passed on to consumers. And that could...