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    On June 5, 1973, the world first celebrated World Environment Day. The date was chosen by the United Nations to honor the 1972 UN Conference on the Human Environment, a landmark summit in conservation and environmental awareness.
    The UN calls World Environment Day “the biggest day for positive environmental action.” It is a day for public outreach as well as personal responsibility—an “opportunity to care for the Earth and become agents of change.”
    Every year, World Environment Day is hosted by a different city or region, with a different theme. Kigali, Rwanda, hosted the 2010 World Environment Day, with the theme “Many Species. One Planet. One Future.” The theme for 2007, hosted in Tromso, Norway, was “Melting Ice—A Hot Topic?” The nation of Angola is the host for 2016, and the theme is “Go Wild for Life: Zero Tolerance for the Illegal Wildlife Trade.”
  • Term Part of Speech Definition Encyclopedic Entry
    celebrate Verb

    to observe or mark an important event with public and private ceremonies or festivities.

    city Noun

    large settlement with a high population density.

    conservation Noun

    management of a natural resource to prevent exploitation, destruction, or neglect.

    Encyclopedic Entry: conservation
    environment Noun

    conditions that surround and influence an organism or community.

    island Noun

    body of land surrounded by water.

    Encyclopedic Entry: island
    landmark Noun

    significant or important event.

    nation Noun

    political unit made of people who share a common territory.

    Encyclopedic Entry: nation
    public Noun

    people of a community.

    region Noun

    any area on Earth with one or more common characteristics. Regions are the basic units of geography.

    Encyclopedic Entry: region
    sea level Noun

    base level for measuring elevations. Sea level is determined by measurements taken over a 19-year cycle.

    Encyclopedic Entry: sea level
    summit Noun

    meeting or conference of top leaders.

    United Nations Noun

    international organization that works for peace, security and cooperation.