"There global warming crap"
Apart from 'their' being the the correct word, plenty of evidence exists that climate change is actually happening, from most of the world. But I bet you think smoking doesn't kill either?
When I studied Geology I was always told time scales were much shorter for the magnetic swap (guess 20 years of science can do that), that and the chandler wobble always kind of freaked me out.
But this is an interesting article that ties them together for you.