Authorities in the southern French city of Nice on Wednesday destroyed more than 500 kilogrammes of ivory as part of the international campaign to end elephant poaching, the International Fund for Animal Welfare (IFAW) announced. Most of the so-called "white gold", which comes from elephant tusks, was seized by the authorities during auctions or online sales, but 100 of the 563 kilogrammes (1,241 pounds) crushed came from members of the public responding to IFAW's "ivory surrender" campaign.