'Disruption': A Dark Mood Descends on Davos

World business and government leaders are gathering here for this year's World Economic Forum meeting -- titled "resilient dynamism." But no one is fooled by the consciously upbeat title. These are sour times, with the global economy moving sideways at best, and flocks of black swans swimming on the horizon – from threats of social unrest to killer bacteria to deadly natural disasters that appear to be growing in frequency and cost.