Primary source for heating, cooking, and water heating.
Used as fuel for trucks, trains, and shipping.
Crucial for manufacturing, including steel, chemicals, and fertilizers.
Includes shale gas (extracted via horizontal drilling and hydraulic fracturing) and coalbed methane.
Mostly methane, but can include other hydrocarbons like ethane, propane, and butane, along with impurities like CO2cap C cap O sub 2 and hydrogen sulfide ( H2Scap H sub 2 cap S Forms: Conventional: Extracted through traditional wells.