The bathroom

The key factor in both cases is the wake effect - the way that a rotating turbine and its stand will cause air turbulence, reducing wind velocity for the around it. Or as the Wind Energy Update report's author, Alan Tricklebank, put it: "The prevalence of wake effects defines a shadow area in which the energy capture of a downwind turbine would be reduced and its fatigue loading increased."

The winners will be awarded at the Illustration Awards Ceremony to be held at the V&A on 11 June, 2012.

71 District and Circle

Nations should manage their territorial waters properly, but also work internationally to manage the high seas, where policing is much more difficult and it's more of a free-for-all for nations to exploit resources.