As rising sea levels threaten low-lying nations around the world, floating cities are gaining political backing and some serious investment.
Matthew Wellings/Alamy.
Leuntje/Alamy.
Concept design by Studio Egret West/image by AVR.
Jon Gambrell/AP.
BFI.
Pauley 2013.
Jacque Fresco/The Venus Project.
Seasteading Institute.
Seasteading Institute.
PR.
Roger Gooch/FSI.
Roger Gooch/FSI.
This feature originally appeared in The Guardian.