Associated Press: Royal Dutch Shell PLC announced Wednesday it will spend more than $2 billion to sharply reduce the burning off of natural gas at its oil wells in Nigeria — gases that when burned contribute to global warming and sicken people living nearby. In a statement, Shell said its Nigerian subsidiary would use the money to capture the natural gas released at 26 flow stations in the oil-rich Niger Delta. The company said it had planned the work there for some time but funding problems and …