Advancing faster than Moore’s Law, hard disk digital storage technologies are are the unsung heroes of the tech revolution. The beat goes on, and a large number of new technologies, from hybrid drives to phase-change ovonics to racetrack memory, promise to match the capacity of digital storage and/or DRAM with the speed of SRAM and other solid state memories. See a big special report from MIT’s Technology Review on all these “next memory” candidates, and more.