There's been a lot in the news recently about climate change, global warming, and whether or not it is primarily caused by human activity. I know many studies have been done on the issue, but it seems for every study done saying it is man-made, another comes out saying it is not, and vice versa. I'm starting to get the feeling that some of these studies are more politically based than scientifically based.... So what are your personal opinions on climate change, and what should be done about it? Is it a man-made problem from CO2 emissions, or is it part of a natural cycle of cooling and warming? Not trying to start a debate, just honestly curious and wanting to see different ideas.