Electronic data is being produced at a breath-taking rate. Around ten zettabytes (ten trillion gigabytes) of data is stored in global server farms, and that’s doubling every two years. With computing already consuming 8% of global electricity, low-energy data-storage is a key priority. Next-generation ‘multi-state’ memory offers a highly energy efficient, low-cost, fast-access solution: stepping ‘beyond binary’ to store more data than just zeros and ones.