The BBC reports on a rise in poaching for the horn trade which is pushing more and more endangered rhino populations towards the brink of extinction.

The wildlife trade organisation Traffic has documented a five-fold increase in the volume of rhino horn entering the illegal market between 2000 and 2005.

The populations most affected are in western and central Africa and Nepal, with one sub-species in Cameroon believed extinct already.
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An expedition in Cameroon last year found that the one remaining tiny population of the northern black rhino sub-species Diceros bicornis longipes had probably been poached to extinction.

DRC is home to the last four northern white rhinos (Ceratotherium simum cottoni) in existence.