The unique rotor design enables a dramatically simpler overall turbine layout resulting in a cost effective and competitive system for a wide range of power ratings, starting with small turbines and scaling up to MW range.

FORBES: Inflatable Wind Turbines Pass Laugh Test

Overall Facebook has made its servers 38% more energy efficient and 24% more cost effective.

FORBES: Facebook Open Sources Its Server and Data Center Technology With Open Compute

They will also evaluate the overall benefits to the women and whether a national screening programme for this group would be cost effective.

BBC: Trial into early breast tests

Nevertheless Gordon Brown, the new chancellor of the exchequer, ought to be concerned that no central figures seem to be kept on the overall cost of public-sector pensions, on how quickly it is rising and how cost-effective it is to pension off so many public servants.

ECONOMIST: Public-sector pensions