World Environment Day World Environment Day was established by the United Nations General Assembly in 1972 to mark the opening of the Stockholm Conference on the Human Environment. Another resolution, adopted by the General Assembly the same day, led to the creation of UNEP (United Nations Environment Programme). Shrinking the world's carbon footprint is the focus of this year's World Environment Day. To help people reduce their carbon consumption, the event's focus is on improving energy efficiency, alternative energy sources and forest conservation. Kick the HabitThe main international celebrations this year will be in Wellington, New Zealand with the theme "Kick the Habit! Towards a Low Carbon Economy." How can you celebrate World Environment Day? Check out this list of "80 Ways to Celebrate." What's interesting is that many of these activities are not "one time only" and this list can form the basis of ongoing initiatives and activities.