Marathon Oil Corp. engages in the exploration, production, and marketing of liquid hydrocarbons and natural gas. It operates through the United States Exploration and Production; and International Exploration and Production geographical segments. The United States E&P explores for, produces, and markets crude oil and condensate, natural gas liquids, and natural gas in the United States. The International E&P covers the operations outside of the United States; and markets liquefied natural gas and methanol in Equatorial Guinea. The company was founded in 1887 and is headquartered in Houston, TX.