Reuters: About 45 nations met on Thursday to seek ways to raise billions of dollars in aid to help the poor combat climate change as the United Nations warned them of a long haul to slow global warming. Environment ministers and senior officials in Geneva were reviewing whether rich nations, hit by austerity cuts, are keeping a promise of $30 billion in “new and additional” climate aid for 2010-12 made at the U.N.’s Copenhagen summit. “The funds are critical” to build trust between rich …