Natural gas is part of a reliable
and clean energy mix

GHG emissions from energy supply can be reduced significantly by replacing current world average coal-fired power plants with modern, highly efficient natural gas combined-cycle (NGCC) power plants or combined heat and power (CHP) plants, provided that natural gas is available and the fugitive emissions associated with its extraction and supply are low or mitigated (robust evidence, high agreement). 
-- Intergovernmental Panel on Climate Change 2014