Why did this AC get modded down? This is a legitimate question. They make a leap from "well we don't know why" straight to "must be human activity". Do you really have to wonder why there are "deniers" to something you claim is so irrefutable? Because you are disingenuous with how you present it. You say "climate change" is a thing, which it is. Climates change. Not as often as the weather, but they change. And that's how you ACT like you're stating it when you stare slack jawed at the "idiocy" of the deniers. Yet in reality you're not saying anything about climate change by itself. You are ALWAYS inferring that the major driver is human activity and therefore to accept that you must accept changes to human activity. Not small changes, HUGE changes. Because if human activity is the primary or even a notable driver of climate change, then the change to make it better has to be global in scale. That means putting your Styrofoam or plastic cups in the recycle bin isn't even close to enough. It means fundamentally altering society. Which means chaos. Which will have a much more dramatic and dire effect on our individual ability to survive. And that's ASSUMING there is a way for humans to avert the type of climate change that makes our lives problematic at some unknown time in the future. But can you assume that without having actual hard data showing the causation (not correlation, not gut feel of your gaia meter) and therefore force change on the global population? You can try, but you'll get no where. Maybe that's what the rabid climate change enthusiast want. An unwinnable whinefest. Well Congratulations, you have it.