Welcome to the Energy Underground!CNG is pleased to provide the Energy Underground® website as a FREE service to increase understanding of natural gas safety, how natural gas is produced and how it improves the world around us. Teachers, register your classes!Register your classes to receive FREE bi-annual newsletters with information and ideas for your classroom. CLICK HERE TO REGISTER Watch movies featuring Sniffy®!Watch movies on natural gas safety featuring Sniffy® and Professor See! WATCH MOVIES Play Games!Enjoy games featuring natural gas safety. CLICK HERE TO PLAY GAMES