A Supreme Court ruling limiting the authority of the E-P-A could significantly impact Texas. The court ruled in favor of Texas and 18 other states that challenged federal clean-air rules. Lennis Barlow with “Environment Texas” says older power plants are a significant source of greenhouse gases contributing to global warming. Three of the country’s top ten greenhouse gas-producing plants are in Texas. Governor Abbott calls Thursday’s Supreme Court ruling a “win” for people worried about rising energy costs.