Marathon Oil Corporation operates as an energy company. It operates in three segments: North America Exploration and Production, International Exploration and Production, and Oil Sands Mining. The North America Exploration and Production segment explores for, produces, and markets crude oil and condensate, natural gas liquids, and natural gas in North America. The International Exploration and Production segment explores for, produces, and markets crude oil and condensate, natural gas liquids, and natural gas in Equatorial Guinea, Ethiopia, Gabon, Kenya, the Kurdistan Region of Iraq, Libya, and the United Kingdom; and produces and markets products manufactured from natural gas, such as liquefied natural gas and methanol in Equatorial Guinea. The Oil Sands Mining segment mines, extracts, and transports bitumen from oil sands deposits in Alberta and Canada; and upgrades the bitumen to produce and market synthetic crude oil and vacuum gas oil. As of December 31, 2014, it had rights to participate in developed and undeveloped leases totaling approximately 33,000 net acres. The company was formerly known as USX Corporation and changed its name to Marathon Oil Corporation in July 2001. Marathon Oil Corporation was founded in 1887 and is headquartered in Houston, Texas.