Perhaps it's a trick of memory, but it seems like old media formats simply evaporate once we move on to the next big thing. The recording industry sold 4.4 billion dollars worth of 8-track tapes ...

Two-photon technology, which relies on overlapping light beams, can be used for three-dimensional multilayer storage and promises capacities of up to 10 Tbyte on a DVD-size disk. Today's optical ...