I thought Greenland was called that to encourage people to settle there from overcrowded scandinavia.
There are natural variations, but they don't tend to happen so fast. Coupled with other things you really can measure like pollution levels and emissions, it's reasonable to conclude human actions are affecting the climate - even as naural cycles continue in the background.
The risks to polar bears are pretty obvious though, whatever the reason for the changing climate. She's a bit dim if she hasn't realised that even if Arctic sea ice is disappearing as part of natural cycles, it's still shite for polar bears and they are at risk.
I think Palin is under-educated, ignorant and has had her rational thinking capacity addled by fundamentalist religion. But I think she is smart and extremely quick off the mark and a very, very good orator. She knows exactly how to work a crowd and roll off a slick response, even if when you pick it apart it makes no sense. That pitbull line, comparing hockey moms to pitbulls in lipstick. Whoohoo! You go Sarah! She had all the hockey moms behind her, cheering to the rafters. But hang on. What the feck is so great about calling yourself a pitbull? Mindlessly aggressive. Not noted for intelligence. Slavish devotion to owner, zero initiative, drooling, stinking beast. The oration did it all - what she actually has to say sinks without trace and is a load of tripe. But the skills she has go a very long way in making her look impressive.