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Combating City Traffic Pollution
The device that sucks pollution out of the air described by inventor Melvin Prueitt
The device that sucks the traffic pollution out of the air describe by its inventor Melvin Prueitt of the Los Alamos National Laboratory - and it generates electricity too.
Also on the programme monitoring HFCs on the west coast of Ireland, how John Vanderplank brought a variety of passionflower back from the brink of extinction and the rediscovery of Edwards's pheasant in Vietnam.
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This programme was restored as part of the World Service archive project
