World Environment Day (WED) is celebrated annually on 5 June and is the United Nations‘ principal vehicle for encouraging awareness and action for the protection of the environment. First held in 1974, it has been a platform for raising awareness on environmental issue such as marine pollution, human overpopulation, global warming, sustainable consumption and wildlife crime. World Environment Day is a global platform for public outreach, with participation from over 143 countries annually. Each year, the program has provided a theme and forum for businesses, non government organizations, communities, governments and celebrities to advocate environmental causes.
World Environment Day was established in 1972 by the United Nations at the Stockholm Conference on the Human Environment (June 5-16, 1972), that had resulted from discussions on the integration of human interactions and the environment. Two years later, in 1974 the first WED was held with the theme “Only One Earth”. Even though WED celebrations have been held annually since 1974, in 1987 the idea for rotating the center of these activities through selecting different host countries began.