“The goal is ensuring the green economy benefits folks who are hurt first and worst by global warming,” says Oriana Magnera. In just a few months, the city of Portland will begin investing the proceeds from a groundbreaking new tax on large companies. No other city in the U.S. has such a tax. The Portland Clean Energy Community Benefits Fund, or PCEF, will raise as much as $60 million a year from a new tax on big retailers. The money is supposed to supply clean, efficient energy and jobs to people the city has long slighted. The overarching goals:...