Is climate change happening, absolutely. Is it solely because of our emissions, I don't think so. I was never really big on believing just emissions were enough to cause climate change, but I did hear something from my science teacher in high school that made a lot more sense (also he used to be a chemistry professor at the U of S). Basically if you look at data about ice ages, we are getting due for one. What happens before an ice age, the temperature rises gradually, which is exactly what's happening now, but its going at a faster rate due to our emissions. Its going to happen no matter what we do, its just the cycle of life, but we are just making it happen faster.