Hong Kong O-Pod 'tube homes'

Hong Kong has one of the worst housing crises in the world, and has been ranked the least affordable city for housing for the last eight years.

Hong Kong architect James Law has designed a low-cost solution to the problem: stackable, retro-fitted water pipe "tube homes" called "O-Pods" that could be rented cheaply to young people.

"If we can work with governments, and even private landowners and manufacturers, we could very cheaply build the O-Pods, and we could rent them out very cheaply to young people who are struggling to afford housing."

Law sees the design as an "open-source" solution for housing crises around the world.

The first O-Pod development is being built in Shenzhen, China and due to open in July.