Cameras are embedded inside the horn of the rhino, in what researchers say is a painless procedure. A British team has developed a system to help protect wild rhinos, which could be extinct within the next ten years, because they are hunted by poachers for their lucrative horns. By using a combination of GPS trackers, heart rate monitors and hidden cameras, wardens can be on site to foil an attack within seconds. \r
Graham Satchell reports.\r
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