German designers reinvent the tree to beat air pollution

Landscape with a Stream by Andreas Achenbach (1851)Landscape with a Stream by Andreas Achenbach (1851)
Art detail - Landscape with a Stream by Andreas Achenbach (1851)

A team of German designers has reinvented the tree to clean up urban air pollution. Using the natural power of moss, they hope to make city air safer to breathe. View original article