Environmentalists hold press adverts depicting (L to R) US President Barack Obama, Japanese Prime Minister Yukio Hatoyama and German Chancellor Angela Merkel as characters from science fiction-adventure film the Matrix and call on the three heads of state to use their power to achieve a planet-saving climate deal at the Bella center of Copenhagen, capital of Denmark, December 14, 2009, during the UN Climate Change Conference. [Xinhua]

Environmentalists wearing polar bear costumes hold placards at the Bella center of Copenhagen, capital of Denmark, December 14, 2009, during the UN Climate Change Conference. [Xinhua]