Inert gas asphyxiation lacks oxygen and consists of an asphyxiant gas (one or more of argon, nitrogen or carbon dioxide), causing the animals to lose consciousness. Argon and nitrogen are important components of a gassing process which seem to cause no pain, and for this reason many consider some types of controlled atmosphere killing more humane than other methods of killing. However, "stunning" is often done using carbon dioxide. If carbon dioxide is used, controlled atmosphere killing is not the same as inert gas asphyxia, because carbon dioxide at high concentrations (above 5%) is not biologically inert, but rather is toxic and also
Phase-out of incandescent light bulbs U.S. House passed the final 2012 budget legislation, which effectively delayed the implementation until October 2012. In 2014 the spending bill proposed by the House effectively blocked the energy efficiency standards in the Energy Independence and Security Act of 2007, which would have made incandescent light bulbs obsolete. As of 2018, incandescent bulbs are set to be banned in the United States in 2020. In February 2007, Australia enacted a law that will, in effect, by legislating efficiency standards, disallow most sales of incandescent light bulbs by 2010. The Australian Federal Government announced minimum energy performance standards (MEPS) for lighting