Environment News Service: Tibetan spiritual leader His Holiness the Dalai Lama said Monday that the world’s leaders must give the highest priority to the issue of global warming. Speaking in Sydney on the first day of his 11-day tour of Australia and New Zealand, the Dalai Lama told the Australian Broadcasting Corp. he is encouraged that governments are taking a greater interest in climate change ahead of the United Nations climate conference in Copenhagen, which opens Monday. “I think it’s very, very …