Mia Hanak, Executive Director of Millennium ART, briefs journalists on the digital media art installation "CO2 CUBES: Visualize a Tonne of Change" which will be unveiled in Copenhagen at the start of the December 2009 UN Conference on Climate Change. The installation created by Millennium ART 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.