In the past year, we've seen tornadoes sweeping across middle America, rivers flooding their banks along the Mississippi and out-of-control wildfires destroying homes in California, Colorado and Texas. But watching the ocean sweep across Wall Street, flooding the New York subway system and destroying a whole section of Queens and New Jersey must finally bring home our total vulnerability to nature. An unexpected and life-changing event can happen to any of us — no matter where we live or how much money or property we have amassed.