Arcology

Arcologies are fully-enclosed areas housing large populations of humans on Earth. The environment on Earth has been rendered unsafe by centuries of industrial-ecological abuse.

Each arcology, built in the 21st century mostly on top of pre-existing cities (and enclosing their historical centers), protects humans from the deadly atmospheric conditions outside while providing a complete and self-contained “world” inside. Most earthlings grow, mature, and die on their planet without ever having seen what used to be known as “the sky”.

Earth arcologies

 * Bombay
 * Brussels
 * Edmonton
 * Johannesburg
 * London
 * Messopia
 * New York
 * Paris

After the resolution of the possession crisis the need for Earth arcologies was no more.