The growing problem of accessing old digital file formats is a "ticking time bomb", the chief executive of the UK National Archives has warned. Natalie Ceeney said society faced the possibility of "losing years of critical knowledge" because modern PCs could not always open old file formats. She was speaking at the launch of a partnership with Microsoft to ensure the Archives could read old formats. Microsoft's UK head Gordon Frazer warned of a looming "digital dark age".Costly dealHe added: "Unless more work is done to ensure legacy file formats can be read and edited in the future, we face...