Field trials show a so-called "drinkable book" can kill bacteria in drinking water, thanks to metal nanoparticles embedded in its pages.

London-based Inmarsat sets a launch date for the third of its next-generation spacecraft, allowing it to complete its £1bn Global Xpress network - the UK's biggest commercial space venture.

A mass grave containing at least 26 skeletons is further evidence of the brutal conflict that appears to have beset central Europe 7,000 years ago.