A home in the trees.

Sequoia City, a carbon-negative city of the late 21st century, was established in the urban forest around Portland, Oregon. The city consisted of giant sequoia trees that were genetically altered for rapid growth and housed residential rooms made of living plant tissue. Inspired by ants that domesticated plants, the planners created a symbiotic relationship between the trees and the residents. Sequoia City's success led to the development of similar tree cities around the world, contributing to the regreening of previously deforested land and a reduction in atmospheric carbon dioxide. [Extracted from the article]