Yale Environment 360: Natural gas production from all seven major shale formations in the U.S. is projected to drop next month for the first time since the shale gas boom began in earnest roughly a decade ago, according to an analysis from the U.S. Energy Information Administration. Major shale regions produced gas at a record-high rate of 45.6 billion cubic feet per day in May, but that rate is expected to drop to 44.9 billion cubic feet per day in September, the report says. It attributes the decline to existing, legacy...