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 anti-coca campaign led to even further discontent, specially by people of indigenous descent. This led to his resignation and fled of the country in 2003, after demonstrations against his government—the strongest ones against his plans to export natural gas, which sparked the “Bolivian gas war”—that cost him lost of Congressional support. Lozada’s vice president took over the presidency, and at this point natural gas was at the center stage of Bolivian politics, with the "Bolivian gas war" full blown. The war originated from the discontent of Bolivian people with the distribution of revenues from what they saw as the biggest