THE BASICS: Gas chemistry and language -- Units of natural gas -- Gas formation -- Gas exploration -- Gas production -- Gas processing -- TRANSPORT AND STORAGE: In field transport -- Gas transmission pipelines -- Liquefied natural gas -- Gas storage -- GAS USAGE: Gas and the environment -- Electricity generation -- Gas to liquids -- Petrochemicals, steel, and fertilizer -- Transport fuel -- Residential gas markets -- CONTRACTS AND PROJECT DEVELOPMENT: Government fiscal systems -- Gas sales and transportation contracts -- Project development -- WORLD TRADE: Internationinal pipeline trade -- lng trade.