The task is to build a giant rain catching water system for a new city. For those not in the prime location, a private setup will do. We will create the worlds largest rain catching waterway in a remote location in Africa, which already contains people needing clean water. This will be the foundation of a new city as people migrate in both to work on the project and to live. As people watch the beginning of the construction, instructions will be distributed for creating your own at-home rain harvesting systems.
See the following for ideas: