Usually security cameras are designed to spot burglars and other intruders. In the Arctic and remote town of Churchill in Canada, radars are being programmed that would alert people when a polar bear approaches town to limit potentially dangerous encounters between man and beast.
The hundreds of polar bears that live in the Hudson Bay area wait for winter to come so they can venture out onto the ice and hunt for seals. In the meantime, they stay onshore and pose a threat to the 900 residents of Churchill.
