International conservationists, desperate to save endangered species, have turned to technology in the hope it will make a difference before it's too late.
Protect is beginning to implant tiny cameras in the horns of rhinos. The rhinos also wear a bright turquoise radio collar equipped with a heart-rate monitor. If a poacher approaches the animal's heart rate will jump. That triggers an alarm and sends GPS coordinates to rangers who come quickly in a truck or by a helicopter. Here is video from the embedded camera: