History of the oil shale industry in the United States Act of 1985 which among other things abolished the United States' Synthetic Liquid Fuels Program. Union finally bowed to continued low oil prices and closed the project in 1991, rather than complete the US$2 billion project. Over several decades, some of the world's largest oil companies (Amoco, Arco, Chevron, Exxon, Gulf, Phillips, Shell, Sohio, Sunoco, Texaco, Union Oil) had spent billions of dollars to start an oil shale industry in the Green River Formation, the world's largest oil shale resource. But in the end, cheap petroleum prices drove oil shale out of business. Even after the oil shale bust, some
Health in Ecuador Health in Ecuador Ecuador contains three distinct climatic regions: Tropical, Highland or Sierra and Amazon rain forest. The health conditions of this country vary according to these regions. In the sierras, in cities such as Quito or Cuenca where most Ecuadorians live, health conditions most commonly associated with the tropics do not exist. For example, the types of mosquitoes which carry malaria and dengue fever cannot live at altitudes above 2300 meters (according to the US Centers for Disease Control) as is the case in virtually all of the sierras. While there does not seem to be general agreement in