A view of the press conference on digital media art installation "CO2 CUBES: Visualize a Tonne of Change", to be unveiled in Copenhagen at the start of the December 2009 UN Conference on Climate Change. The installation, presented in partnership with the UN Department of Public Information, will give viewers a sense of the monumental scale of carbon dioxide released into the air by human activity, in effect making visible a metric tonne of CO2 in solid form.