Good find! This is part of the reason why the "experts" started referring it to Global Climate Change; the key word in the article you will find is cycle. The earth continues to change and while humankind contributes to that change, I would have to believe we have to few years in our history to understand all of the contributing factors such as the temperature of the sun or other spacial factors. Leave it up to human kind to be so arrogant as to assume it alone is impacting the globe.

All that said, we should still be better stewards than we are. If only we could temper these environmentalists and scientists who constantly want to doom and gloom everything.