Athens might no longer be a war zone but atmospheric pollution had already caused serious damage to many of the marbles remaining there, he added.
BBC: NEWS | UK | Elgin marbles campaign launches
City Hall says it has taken measures to cut pollution from buses and taxis and improve the Low Emission Zone.
BBC: Nitrogen oxides
Journey times in the central London zone covered by the scheme are down by a third and air pollution has fallen by 12%.
ECONOMIST: Can road pricing spread beyond London? Not without a push
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