Gargaro's World: Global Warming Is Coming

It seems like everywhere you turn somebody is talking about global warming. And the more I hear about the topic, the more questions I have. Is global warming real? Is it man-made or simply the course of nature for our planet? Are the repercussions going to be as severe as Al Gore says?

Not sure about the answers to the questions above. All I know is whenever I hear someone utter the words global warming, the cartoon below correctly showcases what I am feeling.