"There's one issue that will define the contours of this century more dramatically than any other, and that is the urgent threat of a changing climate."
Barack Obama, President of the United States
"On an increasingly crowded planet, humanity faces many threats - but none is greater than climate change. It magnifies every hazard and tension of our existence."
"The clear and present danger of climate change means we cannot burn our way to prosperity. We already rely too heavily on fossil fuels. We need to find a new, sustainable path to the future we want. We need a clean industrial revolution."
Ban Ki-moon, Secretary General of the United Nations
“Preservation of the environment, promotion of sustainable development and particular attention to climate change are matters of grave concern for the entire human family”