The cables that bring you high-speed internet could provide a cheaper and more efficient alternative to the traditional ways of listening out for earthquakes.
Optical fibre cables transmit information using light traveling through glass fibres. Light loses less energy and move faster than electrons moving through electrical cables, making fibre-optic cables more efficient – which is why they are the favorite for telecommunications like high-speed broadband.
Now, the cables already underground around the world could come in handy for another reason. They may provide a low-cost way to detect earthquakes.