Blu-ray was already looking mighty fine at 25GB of storage per layer -- and if Sony manages to make the indigo foil sheets hold 33.4GB each, we certainly won't complain -- but Japanese researchers have discovered a compound that could leapfrog Blu-ray entirely. Scientists at the University of Tokyo discovered that by hitting 5-nanometer titanium pentoxide crystals with a laser, they could get the metal to change color and conduct less electricity, leading to what they believe is an effective new medium for optical data storage. At 5nm, t
