Why power lines have those strange looking devices What are those odd looking things you always see attached to power lines? Turns out, they’re called lightning arresters and they’re crucial to preventing certain blackouts. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Can Science Prove You’re In Love? How Does Dark Energy Stretch Our Universe? Does the Earth Really Have a “Hum”? Water on Mars? What Are The Most Technologically Advanced Countries? Which Life Form Really Dominates Earth?