The path to exascale computing is a long and windy one, and it's dangerously close to slipping into our shunned bucket of "awesome things that'll never happen." But we'll hand it to IBM -- those guys and gals are working to create a smarter planet, and against our better judgment, we actually think they're onto something here. Scientists at the outfit recently revealed "a new chip technology that integrates electrical and optical devices on the same piece of silicon, enabling computer chips to communicate using pulses of light (instead of electrical signals), resulting in smaller, faster and more power-efficient chips than is possible with conventional technolog