Philadelphia Inquirer: New Jersey helped mark a milestone in climate-change policy in 2008 with the launch of a 10-state program to control carbon dioxide emissions from power producers. The Regional Greenhouse Gas Initiative set up a form of quot;cap and tradequot; that requires power producers to pay for every ton of greenhouse gas emitted by buying allowances at quarterly auctions. Two years in, experts say, RGGI is working. Sort of. The complex auction is functioning well – a feat in itself – and has …