The answer is fog. This is social studies tho.
In the long centuries after the Babylonian exile 2,500 years ago, they succeed in creating a marvelously shockproof survival capsule for a religion whose followers had no firm land base<span />
10 years after Hurricane Katrina<span> hit, we take a look at some ... the storm," thinking the levees would protect </span>them<span> from serious flooding. Why was the storm so devastating? How long </span>did<span> it take before help came and what was that help? ..... </span>many<span> of the rotting hulks left behind after the low-lying coastal </span>city<span> in ...</span>