Any evidence to refute global warming / climate change?

Global warming is happening, it just isn't man made as the general population believes it to be. Earth goes through cycles of ice age, rising temperatures, cooling temperatures, and another ice age constantly and consistently in million year cycles. This is natural, the climate is rising on it's own. There is no reason to follow Al Gore and honor and praise his judgement like it's so amazing when he is a hypocrite environmentalist living the life he wants people to condemn. Another thing, those pictures of the "drowning/starving" polar bears aren't really as bad as they are made out to be. If you actually know polar bears, mother bears purposely go out onto small ice floes with their cubs to protect them from the males who will eat them. On the floes, the mother is still thin from supporting her cubs and giving them all of her food as she teaches them how to hunt and survive on their own. These pictures are real, they are just used as a prop for global warming.