Even though so much of our world is now wireless, most of those wavelengths are still made possible by a worldwide network of hardwired cables — from the huge backbones of internet service providers to the ethernet lines in people’s homes. The cables that connect continents under the ocean alone span a length of more than 700,000 miles. Just 50 years after the invention of ethernet, our planet Earth is now literally wrapped in the embrace of the internet. It’s the cord that can’t be…