Climate change is the major, overriding environmental issue of our time. Today reputable scientists no longer question this and agree that urgent action is necessary globally. It is a growing crisis increasingly affecting economies, health, safety, food production, security, and many other aspects of our lives. There is alarming evidence that important tipping points, leading to irreversible changes in major ecosystems and the planetary climate system, may already have been reached or passed.
The United Nations has consistently taken leadership, for several decades now, to research and attempt to mobilize societies around the world to implement practices to reduce the impact of climate change. Since the UN is not a world government, the effectiveness of its efforts depends on voluntary cooperation of all nations, cities and individuals.
“A point has been reached in history when we must shape our actions throughout the world with a more prudent care for their environmental consequences. Through ignorance or indifference we can do massive and irreversible harm to the earthly environment on which our life and well being depend. Conversely, through fuller knowledge and wiser action, we can achieve for ourselves and our posterity a better life in an environment more in keeping with human needs and hopes …”
“To defend and improve the human environment for present and future generations has become an imperative goal for mankind…” from the Declaration of the UN Conference on the Human Environment (Stockholm, 1972), item 6