All modern means of communication rely on glass. From the Gorilla glass on our phones to the infotainment screens on our cars. But when I think of the internet I think of 5G, Starlink satellites, and WiFi, and I never think about the 750,000 miles of fiber optic cables currently running under our oceans: the tiny strands of glass that carry all of our photos, emails, and video chats. It is through these hair-thin strands of fiber that we are able to instantly communicate to almost anyone, anywhere, and it all relies on a 5,000-year-old technology: glass.
![The glass fibers connecting our wireless world](https://b2122956.smushcdn.com/2122956/wp-content/uploads/2021/04/The-glass-fibers-connecting-our-wireless-world.jpg?lossy=2&strip=1&webp=1)