JOHANNESBURG, 28 October 2013 (IRIN) - Humanitarian professionals tend to cringe at the spectacle of khaki-clad celebrities handing out food rations to refugees in Sudan or singing nursery rhymes to orphans in Malawi, but there is no denying the global attention and resources that well-known personalities can bring to their chosen causes.

The UN has long recognized this potential. It started using celebrities to publicize its work and raise funds in 1954, with the appointment of American ente...

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