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"Six employees were injured after a blast at Marathon Petroleum's Garyville refinery sparked a fire and sent shockwaves felt in surrounding parishes, the company said Tuesday."

"Documents show that Ascend Performance Materials, the nation’s largest emitter of nitrous oxide, is still emitting significant amounts of the climate super-pollutant."

"Efforts by the nation’s largest emitter of nitrous oxide to rein in the release of the potent greenhouse gas are behind schedule, allowing the emissions, which are relatively easy to eliminate, to continue to fuel climate change.

"A city commissioner race in Florida provides a window into how the sugar industry cultivates political allies, who help protect its interests."

"The largest public power company in the U.S. is launching a program to develop and fund new small modular nuclear reactors as part of its strategy to dramatically reduce greenhouse gas emissions."

"A corroded pipeline that ruptured and spilled 350,000 gallons (1.6 million liters) of diesel fuel into a New Orleans area wetland did not have a fully functioning leak detection system at the time, according to federal records, which also show the spill was larger than previously reported."

"Conservation groups sued the federal government Tuesday over last year’s record manatee deaths, saying the government failed to follow the law by designating protected habitat for the marine mammals."

"If you think it’s not our fault, urine denial."

"Peacocks may lose their legally mandated welcome in some neighborhoods across Miami-Dade after county commissioners agreed to loosen a law protecting the divisive birds."

"Three federal agencies promised Wednesday to help modernize Puerto Rico’s outage-plagued power grid and speed up efforts to strengthen it more than four years after Hurricane Maria razed it."