* Electronic waste contains high concentrations of heavy metals, brominated flame retardants and other plastic additives that have proven adverse effects on humans. <small>Note: more information can be found at [[Electronic waste]].</small>
* The volume of electronic waste produced is high, and growing fast <ref>http://www.epa.gov/epawaste/conserve/materials/ecycling/manage.htm Accessed Nov. 11, 2008</ref>. In 2005, the United States alone disposed of was at least 1.5 million tons of electronic waste, and at most one quarter of that was recycled <ref>http://www.epa.gov/epawaste/conserve/materials/ecycling/docs/fact7-08.pdf Accessed Nov. 11, 2008</ref>. The situation is similar in Canada, with more than 71 000 tonnes of waste being disposed of in 2005, with just 26% being recycled <ref>http://www.ec.gc.ca/wmd-dgd/default.asp?lang=En&n=F3852FB1-1 Accessed Nov. 11, 2008.</ref>. In the province of Ontario, Canada, the percentage recycled in 2004 was just 2% <ref>http://www.ene.gov.on.ca/en/news/2007/061201.php</ref>.
== Materials involved ==