【明報專訊】Ferocious hurricane (颶風) Sandy was one of the most treacherous weather events the United States has seen. It has claimed many lives, affected millions by floods, fires, blackouts and mass evacuations (疏散), and wrecked homes and buildings. Just how did Sandy become so powerful? Were there any better predictors that could have given us more warning? What can we learn from a natural catastrophe (大災難) of such disastrous proportions?