Banks of moss could clean dirty air of particulate matter. Citydwellers would breathe more freely. The City Tree project has developed high-tech walls of moss to install on dirty streets.
Berlin is notorious for dirty air in Germany. The local government wants to introduce speed limits on major roads to tackle the problem, while environmental groups continue to call for a diesel ban across Germany.
Facing EU penalties over poor air quality, Germany has said it wants to test free public transport in five cities. Bonn and Essen are among the cities to serve as testing ground for the new project.
Germany is among nine EU countries facing fines for breaking the law on air pollution. Environment ministers have been called to Brussels to explain their plans for tackling this — under threat of being taken to court.
The Indian capital is covered in a blanket of thick smog as the concentration of harmful particulate matter in the air reached hazardous levels. Local officials have asked schools to remain shut until Sunday.
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