greenland ice sheet:slipsliding away, page-6

The article talks about the frozen landscape being formed 11000 years ago. The question to ask yourself is why the earth was so warm 12000 years ago that these regions were not frozen then. Human activity didnt make the earth warm 12000 years ago. Surely these cycles are natural cycles that our earth goes through. I find it very odd that all the so called experts completely ignore the fact that the earth has gone through heating and cooling cycles very many times before, and well before any humans existed.
Its a natural cycle chaps. Get used to it.