yesterday on a third day of rallies as pressure mounts worldwide on global leaders to strike a pact on cut ting greenhouse gases at crucial talks in still shaken Paris, Some 150 leaders, including US Presi dent Barack Obama, China's Xi Jinping, India's Narendra Modi and Russia's Vladimir Putin, are attending the start today of the UN conference, hoping to reach the first truly universal climate pact The goal is to limit average global warm- ing to 2C, perhaps less, over pre-Industrial Revolution levels by curbing fossil fuel emissions blamed for climate change.