Hopenhagen is a movement generated by the International Advertising Association representing the global advertising industry in support of the United Nations Climate Change Conference that just recently took place in Copenhagen. I only just stumbled across this clever public awareness campaign by Ogilvy & Mather agency yesterday; the style of ad has been done before with the overlapping images of people from different ethnic backgrounds but the copy is what does it for me, its so powerful. “6.8 billion people. One Voice. Together we can fight climate change. Join the movement at Hopenhagen.org” More posters and video from this campaign after the cut.