UK ENGLAND LONDON 18APR16 - Two Greenpeace activists climb Nelson&rsquo;s Column at 4am to demand action on air pollution. Alison Garrigan (29) and Luke Jones (30) fit the statue of Admiral Lord Nelson, towering 52 metres above Trafalgar Square, with an emergency face mask. <br /> <br /> <br /> <br /> jre/Photo by Jiri Rezac<br /> <br /> / Greenpeace<br /> <br /> &copy; Jiri Rezac 2016
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