Economist: LAST December California approved a power line between San Diego and the Imperial Valley–a spot blessed with sun, wind and geothermal energy resources. The Sunrise Powerlink would twist around a state park, an Indian reservation and much of a forest (see map). Its builders would be banned from harming burrowing owls or rattlesnakes. It is just the sort of green infrastructure project that might be expected to delight environmentalists. Their response? An appeal and a petition to the state …