Rebuilding after disaster

A disaster, such as befell Joplin, Missouri, can bring devastation.  But it can also bring opportunity, as this report on Greenburg, Kansas, which was destroyed by a tornado in 2007, shows.  Greenburg has largely rebuilt — sustainably.  Several buildings are LEED certified.  The new school has natural light and geothermal heat, and a wind generator that saves $150,000 a year on energy costs.  GR