(CdM) Fires are more caused by extreme dryness and the density and type of vegetation than by heat alone though of course heat and dryness are often associated. There have been fires in Britain, nearly always in early spring after a very dry winter. This is the problem of using proxies - some are very sensitive to environmental change whereas others have a multitude of causes and may tell you very little. By far the safest assessment is to use measured and quality-controlled data and proper analysis will tell you if anything's happening. (It is. It's getting warmer)
[SM] 'sbeen that way for years, they just tend to dwindle into total inertia. Presumably because no-one feels like sufficiently involved in a given game enough to be the person to end it. I fear there aren't many budding ideas waiting to be started though (I'd love to be wrong).