Warming to an idea

I am grateful to Mr Not-A-Sheep for covering this little wheeze that helps the "Global Warming" fraternity put out a misleading message.

The graph here (which I have copied from the linked post) shows the sudden change in average temperature once the "inconvenient" weather stations had been excluded from the equation.

It's all rather obvious, when presented in this way, isn't it? You won't get that in The Guardian or at the BBC, of course!