The World Environment Day (WED) is celebrated on June 5th each year and is the UN's principal vehicle for encouraging global information and action for the protection of our environment.

The World Environment Day (WED) was designed by the United Nations General Assembly in 1972 the first day of the United Nations Conference on the Human Environment, resulting 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". It was flagship campaign for raising awareness on emerging environmental issues from marine pollution and global warming, to sustainable consumption and wildlife crime. In 1987 began the idea of ​​rotating the center of these activities started with the choice of different host countries. The focus on the host country helps highlight the environmental challenges it faces, and supports the effort to address them.

For 2017, the theme of World Environment Day is: "Connecting People to Nature – in the city and on the land, from the poles to the equator", while Canada is this year’s host country. This year's World Environment Day theme has as its main purpose to encourage everyone to go out in nature and to appreciate the benefits of it, while enjoying the beauty and diversity of the natural world. It is a call through this process to consolidate the need to protect nature.

World Environment Day has evolved into a global platform for public outreach, with participation from over 143 countries annually. IIndividuals and organizations are encouraged to add activities related to the environment for saving it and also motivate the people for taking an initiative toward it.

The UN Global Web Environment Day Global Environment Day Platform includes guides for organizations and citizens intending to implement such an action, while with hashtags #WorldEnvironmentDay and #WithNature, invites people to share images and experiences from this action.