Governors in six states have declared states of emergency after nearly 340,000 gallons of gasoline spilled in central Alabama from one of the region’s major pipelines, prompting gas prices to rise across the region. The Colonial pipeline carries 1.3 million barrels of gasoline a day down to refineries in Texas and Louisiana, accounting for a full 40 percent of the region’s gasoline. EPA officials say the massive spill narrowly avoided reaching the Cahaba River, home to endangered species.