Gas chamber carbon monoxide as the lethal agent. Sometimes a box filled with anesthetic gas is used to anesthetize small animals for surgery or euthanasia. 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
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