Natural gas tens of millions of structures that use the fuel, the individual risk of using natural gas is very low. Natural gas heating systems may cause carbon monoxide poisoning if unvented or poorly vented. In 2011, natural gas furnaces, space heaters, water heaters and stoves were blamed for 11 carbon monoxide deaths in the US. Another 22 deaths were attributed to appliances running on liquified petroleum gas, and 17 deaths on gas of unspecified type. Improvements in natural gas furnace designs have greatly reduced CO poisoning concerns. Detectors are also available that warn of carbon monoxide and/or explosive gas (methane, propane,
Natural gas in Bolivia Natural gas in Bolivia Natural gas in Bolivia is one of the nation's main energy sources and export products. Bolivia's proved natural gas reserves are estimated to be 24,800,000,000,000(ft³) (1 January 2009 est.). Most of these reserves are located in the eastern region of the country. The major export pipelines in Bolivia transport the gas to Argentina and Brazil. In 1994 the natural gas sector was privatized, and it was subsequently re-nationalized in 2006 by current president Evo Morales after popular protests during the 2005 Bolivian gas conflict. “Bolivia’s economic history reveals a pattern of a single-commodity focus”, diversification has