VICTOR DE SCHWANBERG / SCIENCE PHOTO LIBRARY VICTOR DE SCHWANBERG / SCIENCE PHOTO LIBRARY
Improving air quality in London. Conceptual image of a human lung superimposed on a map of the city of London. London's Congestion Charge Zone (white area, top of picture) was introduced in 2003 in an attemt to curb the amount of traffic entering into the city. One of the aims of the Congestion Charge Zone is an improvement in air quality due to a reduction of vehicle exhaust fumes.
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