Greenpeace, who have previously used borrowed interest to great effect - making a LEGO film to coincide with the release of 'The LEGO Movie' (7.5M YouTube hits and counting) - will be looking for more of that viral success with this 'Season 6 Teaser' promoting their new microsite: winterisnotcoming.org.

The caption reads: "A few more degrees can change the story" - referencing the frozen 'White Walkers' from popular TV show Game of Thrones.

Winter might not be coming, but like the climate, HBOs lawyers are probably just getting warmed up.

Client: Greenpeace France