Vertical garden experiment measures impact of city pollution on horticulture

A vertical garden in Latvia which consists of local plants chosen from throughout the small country. Photo: AFP

Heavy metals? Nanoparticles? An architectural project was recently launched in Latvia to measure the impact of the urban environment on plants, notably the ones that we consume.

These vertical gardens are four metres high. They are called "G(u)arden," and were conceived by architecture firm Annvil.