The Pittsburgh Examiner reports that the 5,000 people left homeless by the tornado that ripped Joplin, Missouri, May 22 will have small, easily assembled modular houses to live in temporarily.  The Federal Emergency Management Agency (FEMA) learned from its disaster following Hurricane Katrina and has invested heavily in its Alternative Housing Pilot Program (AHPP) to develop housing for catastrophic times.  Shipped (and stored) flat as kits, the units can be hooked up to existing utilities or be made self-sufficient if necessary, and are high wind and earthquake resistant.  Each unit costs around $30,000, comparable to that of a FEMA home.