LIBBY GEORGE  JONAH Gbemre often has no electricity, but he says his home is permanently lit at night by the flames of waste gas being "flared" near his home town in Nigeria's Delta State. Like Gbemre, nearly half of Nigerians have no stable power supply, yet government attempts to harness gas belching from its oil fields to generate urgently-needed electricity or revenue have stalled. And experts say that without progress towards its 2030 target of virtually eliminating flaring, which releases carbon dioxide along with polluting methane and soot, Nigeria cannot meet its pledge to cut greenhouse gas emissions by 20%.…