- International Year of Planet Earth is a 2008 international observance, declared by the 60th United Nations General Assembly. The Year's activities will span the three years 2007-2009. / Earth
- International Year of the Potato
- International Year of Sanitation
- 2005 to 2014 United Nations Decade of Education for Sustainable Development / Education
- 2005 to 2015 Water for Life Decade / H2O
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