The European Union (EU) plans to include maritime transport in emissions trading, in addition to possibly imposing charges on carbon dioxide discharges from ships. Global maritime transport is the source of almost three percent of carbon dioxide discharges, and the International Maritime Organization has failed to agree on measures to curb emissions from ships for more than a decade. Yvon Slingenberg, head of the emissions trading unit at the European Commission, said that the EU will create a "parallel track" to use its own tools to limit maritime pollution. In addition, the emissions trading system will expand next year to include aviation and again the following year to include chemical and aluminum industries. However, European emission permit prices fell last week after the United Kingdom raised its carbon tax to ensure a premium over EU emissions permits. Chancellor of the Exchequer George Osborne said the floor price will be $25.84 per ton of carbon dioxide in 2013, and EU permits for December 2013 fell 2.3 percent to $26.10 a metric ton. For the full story, see http://www.bloomberg.com/news/2011-03-24/u-k-treasury-to-review-how-carbon-tax-affects-existing-plants.html. For the UK's new floor, see http://www.bloomberg.com/news/2011-03-24/u-k-s-new-carbon-tax-is-higher-than-assumed-citigroup-says.html.