Not about climate change, of course, but instead the spurious 'man made global warming', today an assortment of grungies and crusties will set up camp in one of our public spaces. The police are pretending not to know which one, but you can be pretty sure that they do.
My bet's on Lincoln's Inn Fields, or possibly Temple Gardens. If they pick Temple Gardens, they have the delightful prospect of being watched over (and filmed) from the many barristers' chambers around - including that of Mr Dominic Grieve QC, the Shadow Justice Secretary.
Anyway, possibly not the weekend to schedule a visit to the fantastic Sir John Soanes' Museum.