With wildlife crime now thought to be second only to drugs in terms of profit, Rageh Omaar goes on the trail of the ivory poachers, smugglers and organised crime syndicates to investigate the plight of Africa's elephants. As demand for ivory rises... (more) in the Far East, this Panorama special - made jointly with the BBC's Natural History Unit - goes undercover in central Africa and China to ask whether the African elephant can survive in some parts of the continent. Last year saw the highest number of large seizures of illegal ivory for over two decades - despite a 23 year global ban on its international sale. One area of northern Kenya has lost a quarter of its elephants in the last three years - largely due to poaching. Panorama visits an elephant orphanage to see the impact of the killing on the young and, with access to Interpol's largest ever ivory operation, confronts the dealers in Africa and in China - now the world's biggest buyer of illegal ivory. The film hears fears that, unless China curbs its huge appetite for ivory, the future of the world's largest land mammal could be in doubt.