The second finalist in Dezeen's Redesign the World competition powered by Twinmotion is Justinian Khoo, who has proposed moving humanity into sustainable floating cities so that nature can reclaim the land.
Called The Whales, the clusters of cities, which Khoo designed to resemble pods of the large marine mammals, would be powered entirely by renewable energy harnessed from the sea, sun and wind.
Fish farming would provide protein-rich food for the inhabitants of the cities, with the waste used to fertilise crops on floating farms.
Vegetation would also be used as a natural filtration system for waste water, while food waste would be composted to minimise landfill.
By moving humanity into the floating cities, Khoo imagines being able to allow nature to rewild the planet's landmasses in order to restore natural ecosystems and reverse climate change. Read more about the proposal below.

The Whales

Justinian Khoo, Melbourne, Australia

Finalist
"My proposal is to build a floating city that resembles a whale family, inspired by the ocean's largest gentle giant that travels together as groups.
"An environmentally sustainable floating city where beauty, sustainability and quality work together, saving our planet from climate change and freeing up space on land.
"The floating city is designed for human survival and will provide care for the ocean. At the same time, it provides freedom for nature on the land to restore the environment with animals and insects roami...