Clinton: Climate change is world's biggest worry

Former US President Bill Clinton told corporate chieftains and political bigwigs that climate change was the world's biggest problem - followed by global inequality and the "apparently irreconcilable" religious and cultural differences behind terrorism. Clinton's comments provided something of a freewheeling and philosophical finale - before Sunday's formal wrap-up - to several days of high-powered discourse on the state of the world, and the mostly admiring audience seemed to hang on his every word. "First, I worry about climate change," Clinton said Saturday in an onstage conversation with the founder of the World Economic Forum. "It's the only thing that I believe has the power to fundamentally end the march of civilization as we know it, and make a lot of the other efforts that we're making irrelevant and impossible."