The French startup Mobotiq wants to decentralise urban transport - with the help of DIY vehicles and the Ethereum blockchain. Read on

The growth of cities is a cause for air pollution concerns - but raising awareness about something invisible is a challenge. Hawa Dawa might just change that.  Read on

Wind is one of the cornerstones of renewable energy generation, and now a new Dutch project is seeking to build an island to open more opportunities. Read on

A town in Norway is testing new energy-saving technology in its street lights - that turns them down as soon as nobody is around. Read on

An intriguing spin-off from Google is a geothermal start-up looking to utilise your own backyard to generate heating and cooling for your house. The company, called Dandelion, currently operating in the USA, has developed a system to take advantage of the lag effect on the temperature of the earth underneath our feet. Read on

A disused car park hidden under the streets of Paris has become the home of a huge indoor agriculture experiment - an urban permaculture project called "the cave". Read on

A city above the city: two architects want to turn empty inner city rooftops into a brand new place to live. We talked to Cabin Spacey to find out more. Read on