Atlanta Journal-Constitution: This March, Gov. Sonny Perdue traveled to a tree farm near Macon to endorse a new environmental program in the state. Called Keeping Forests in Forests, the program plans to offer 700,000 Georgia electric co-op members — about half of them in metro Atlanta — a chance to offset their “carbon footprints” for an extra $5 to $25 on their power bills each month. THE PLAYERS * Power4Georgians is a coalition of electric co-ops planning a new coal-fired power plant in Middle …