European City Ranking, Best practices for clean air

The European Environmental Bureau (EEB), integrated by non gubernamental asociations, publishes their ranking with the cleanest cities. Roma is the most polluted one, and Madrid is one of the last. Berlin is in the top of the cleanest cities.

You can check the ranking and look for more information of each city here.

Reference sent by: Raquel Osa.
Image: sootfreecities.

ANTI POLLUTION CONCRETE

Some Scientists from Belgium are studing a new way to reduce air pollution. It is a concrete covered by a chemical with titanium oxide and It is illuminated by ultraviolet lights.

They are testing it in a tunnel with traffic, if It works they will use this method in others tunnels in Bruselas.

You can read more at Ecología Verde.