International Herald Tribune: Richard Branson was lounging under the starry midnight sky on this palm-dappled speck of an island recently when he popped a sobering question. “So, do we really think the world is on fire?” Branson, the British magnate and adventurer, asked several guests, as a manservant scurried off to fetch him another glass of pinot grigio. What he wanted to know was whether his high-powered visitors, among them Larry Page of Google, Jimmy Wales of Wikipedia and Tony Blair, the …