'Doesn't bother with half measures'

The conceit in this global-warming documentary is that the presenter (played by Pete Postlethwaite) is an archivist in the year 2055. Mankind has been jeopardised by environmental catastrophe, and nobody can understand how the previous generation — that’s us — could have been dumb enough to let this happen. So, what can we do now to avert this fate? To her credit, the film’s maker, Franny Armstrong, doesn’t bother with half-measures: what’s called for is “a total reordering of western society”. Yet the film is mainly a ragbag of footage illustrating present-day problems, from which we get hardly any useful information about how to proceed. 12A, 92 mins