Anyway, even without data from the 'siberian cherry trees' (had...

Anyway, even without data from the 'siberian cherry trees' (had to get that in - lol), the earth's temperature has been rising.

Yes, you're right, T is rising since the last Ice Age. With little cooling and warming here and there, all 'smoothed' by Mann and co to make it look flat.
They took 34 trees from Syberia, tossed out most of them, left only 12 and 'created' the Hockey Stick Graph to prove that we are worming only for the last 100 years - like never before. The Medieval Warming Period is completely wiped off.

Their 'science' is busted in a way that even the hard core 'believers' avoid talking about it. Their only 'hope' is that people are ill informed and ignorant!