http://www.unmultimedia.org/tv/webcast/2010/09/secretary-general-adressing-the-global-water-and-sanitation-challenges-the-key-to-the-mdgs.html
[Accessed: 31.03.2011]
The Secretary-General of the United Nations, Ban Ki-moon, addresses the global water and sanitation challenges in this speech available at the UN webcast (online stream)