Clean Energy Fuels Corp. announced it would convert all its natural gas fuel to its renewable product, Redeem, by 2025 as it positions itself to offer the cleanest available fuel alternative to diesel through a broad distribution network. The plan comes as regulatory agencies are considering how to toughen emissions regulations for nitrogen oxide, which produces smog and acid rain, and affects the human respiratory system. The primary sources of renewable natural gas include landfills, wastewater treatment facilities and anaerobic digestion that occurs at dairy and other farms. “What we are saying is consider the source. Your fuel is only as clean as where you are sourcing from,” Ashley White, head of corporate sustainability at Clean Energy, told Transport Topics. More >>