Associated Press: WHAT: American Electric Power said in its Friday earnings release that a 57 percent drop in its second-quarter numbers was partly due to a charge related to a carbon capture project at its Mountaineer Plant in W.Va., serving that state and Virginia through AEP’s Appalachian Power unit. THE DETAILS: AEP last fall commissioned a $70 million demonstration project at the plant designed to cut down on pollution by capturing carbon dioxide from the plant’s emissions and storing it …