When the internet goes down, life as the modern American knows it grinds to a halt. Gone are the cute kitten photos and the Facebook status updates—but also gone are the signals telling stoplights to change from green to red, and doctors’ access to online patient records.

A vast web of physical infrastructure undergirds the internet connections that touch nearly every aspect of modern life. Delicate fiber optic cables, massive data transfer stations, and power stations create a patchwork of literal nuts and bolts that facilitates the flow of zeros and ones.

Now, research shows that a whole lot of that infrastructure sits squarely in the path of rising seas. (See what the planet would look like if all the