So they're admitting that it IS the Sun that is warmning things, not humanity?
We have had warming and cooling cycles for as long as the Earth has been her and will ahve them for as long as the Earth is here. Simple a that. We seem to be in a warm cycle right now, but that is about all that teh enviros have right.
No, the GW cult emphatically rejects that the sun is the cause of anything, that's why they react to ideas like the one proposed in the article by putting their fingers in their ears and saying "la la la, I can't hear you."