1. NATURAL GAS:
Gulf Coast ethane 'crackers' may face air quality hurdles
A cluster of multibillion-dollar petrochemical plant projects proposed for the U.S. Gulf Coast are counted on to absorb a glut of ethane and other natural gas liquids from expanding shale gas production. But some projects may be delayed or blocked by tight air quality restrictions in the Houston-Galveston-Beaumont chemical industry corridor, already burdened by high ozone and other hazardous plant emissions, experts predict.