The good folks at Skeptical Science have produced a video showing that we humans are indeed causing the climate to change in the direction of increasing temperatures.
But all is not lost. In some parts of Australia the temperature has become so warm that it is impossible to pour petroleum into ones fuel tank. If you can’t do this you can’t burn it so the whole thing is self limiting. Unfortunately the temperature that you need to arrive at for this limiting to occur is 48.2 degrees C.