India recently approved a US$3.9 billion scheme to turn more of its vast coal reserves into gas. Even as its energy security ambitions gather pace, experts warn that scaling up the centuries-old technology will likely be a slow burn. SINGAPORE: India is ramping up efforts to turn coal into gas, joining several other Asian economies such as China and Indonesia in turning to the centuries-old technology to reduce dependence on imported fuels. New Delhi’s push has gained fresh urgency as shipping