New use for fibre

Not what this forum was intended for (I hope Andrew doesn't mind ), but interesting.

Beeb article:

In reference to www.bbc.co.uk/news/science-environment-44683284:

Earthquakes may now become easier to detect than ever before, with the aid of developing technology.

Researchers in Iceland have successfully used an existing fibre-optic communications cable to assess seismic activity.

Full article in Nature (much heavier reading!).