The transportation of one of the world’s most essential commodities is constantly taking place right above our heads. Almost anywhere in the world, you can step outside and see power lines, but how safe are those lines? Are they thoroughly checked often enough? As the world’s electrical needs increase so does the number of power lines required to meet those needs. In the United States alone, there are more than 5.5 million miles of local distributions lines and more than 200,000 miles of high-voltage transmission lines, according to Scientific America.