Celebrities take part in climate change conference at the UN in New York

Actress Daryl Hannah (shown) holds a joint press conference with Sir Richard Branson, CEO Virgin Group and Srgjan Kerim, President of the UN General Assembly, to outline the need for partnerships with the private sector and civil society in addressing the challenge of global climate change on February 11, 2008 at the United Nations in New York. (UPI Photo/Ezio Petersen)