The global warming crowd is using all the surface data, including cities like L.A. to support their claim, and the data is flawed because it's influe… - Anthony Watts

That the climate has always changed. It has never been static. In the past it has seen extremes hotter and colder than what we experience today. So change is normal.

Our earth is warmed by a gigantic nuclear fireball, millions of times the mass of earth and a mere 8.5 light-minutes away. One hundred and nine Earths would be required to fit across the Sun's disk, and its interior could hold over 1.3 million Earths. ... You can't just ignore that kind of power. Though it seems some prefer to, since it muddles the results they seek.

I would say that the polar ice has disappeared in the past. Certainly there seems to be evidence of past climate situations where we may have had virtually no or none during the summertime. In the immediate future, however, I don't think we are going to see that. In fact, we're going through a rebound right now.