Located 33m below street level, this urban farm produces salad in a controlled environment, providing ideal conditions for microgreens, baby leaves and herbs.
It generates just a tenth of CO2 emissions of a traditional fired brick and less than a tenth of the energy in its manufacture.
Innovative "depot-to-door" system reduces traffic congestion and carbon emissions
Environmentalist Dale Vince and its vegan football club Forest Green Rovers will build the world's first wooden football stadium.
Called Finite, the material is strong as concrete, biodegradable and made from desert sand, which is a resource that has until now been useless for construction.