How tech is tackling wildlife trafficking

New technology is helping in the fight against wildlife poaching. Computer scientists have created a programme that uses artificial intelligence to predict where poachers are going to strike; a new generation of smart cameras is catching the criminals red-handed; and the latest police forensic techniques are being adapted to investigate these crimes. The aim is to put a stop to the illegal trade of wildlife trafficking, which is worth billions of dollars and is threatening the survival of species such as elephants, rhinos and tigers. Each year 20,000 elephants are killed for their ivory, according to WWF estimates. Reporter and producer - Richard Kenny for BBC World Service