Gas chamber Gas chamber A gas chamber is an apparatus for killing humans or other animals with gas, consisting of a sealed chamber into which a poisonous or asphyxiant gas is introduced. The most commonly used poisonous agent is hydrogen cyanide; carbon dioxide and carbon monoxide have also been used. Gas chambers were used as a method of execution for condemned prisoners in the United States beginning in the 1920s and continue to be a legal execution method in three states. During the Holocaust, large-scale gas chambers designed for mass killing were used by Nazi Germany as part of their genocide program.
Natural gas in China Natural gas in China Over the last five years, gas consumption, production, and imports in China have grown dramatically, with two-digit growth. Considering China's immense demand for energy, gas plays a relatively small role in its energy use, with only 5% of total energy in 2012. However, Chinese authorities see natural gas as a lower-polluting and less carbon-intensive alternative to coal, and gas consumption is increasing rapidly. Natural gas is expected to supply 10% of the nation’s energy supply by 2020. China produced 112 billion cubic meters of natural gas in 2013, making it the sixth largest gas producer in