Daily Climate: Scott Newman was laid off in February from his job repairing home oil heaters, a victim of the dismal economy. Today, he sits in a class with a new job, learning how to sleuth out wasted energy in homes. Newman is in the vanguard of a green-collar corps created by the nation’s first carbon cap-and-trade program, operating in 10 northeastern states. Workers are being hired for a booming expansion of energy efficiency programs, financed by money raised from power companies paying for …