Inventing an Anti-Security System in the Name of Sleep - Paula Kahumbu

National Geographic Emerging Explorer Paula Kahumbu tells Boyd of the story of a young boy whose job it was to help protect his family's homestead at night from lions hoping to make a meal of their livestock. Initially, he had to prowl around the property with a flashlight to show the lions that he was there, vigilantly watching them. But needing some more sleep, he devised a contraption that made flashing lights appear randomly around the property. This has the cats sufficiently baffled that in the two years since his invention, and they haven't made a meal of the family's livestock.