In the Czech Republic, some cities have installed drip-irrigation bags at the base of their trees to protect them from drought.
With their ever increasing populations cities must look to the circular economy to fight global warming.
Converting dog excrement into biogas is the 100% circular idea illuminating the streets of Malvern, a sustainable city in Worcestershire, West England.
Some of Limoges’ streets have joined the local circular economy with a recycled porcelain waste surface.
Dickson Despommier has been promoting the concept of vertical farming since 1999. What if green skyscrapers could feed the cities?