Meanwhile, emergency workers in Dar es Salaam have stopped rescue operations following the collapse of a multi-storey building on Friday.

BBC: Tanzania quarry collapse kills 14 in Arusha

Northampton Castle will have a new station building and multi-storey car park, West Northamptonshire Development Corporation (WNDC) said.

BBC: Designs for Northampton railway station

But the problems are exacerbated in the multi-storey chips which IBM, as well as others, believe offer "one of the most promising approaches" for building future processors.

BBC: IBM aims to cool chips with water