Well, it's not like it isn't accepted that volcanic eruptions contribute to the "Global Warming" or whatever you want to name it.
And in fact, scientists I know about agree that the climate is indeed warming up and changing, but it's perfectly natural. It's just that the people are listening to those backed by big corporations, for which the whole issue is just another way to make money. The same corporations make sure that people know and care about it.
We had an Ice Age relatively recently. After it, the climate started warming up. That process is simply not finished yet, climate will be getting warmer just like it did after every other Ice Age.
Still, it's a problem. One we can't remedy with stupid limits on CO2 emission (which only ruin the economy because of how much they cost). What we have to do is to strengthen the existing dams and build new ones to prevent the sea from flooding places that are below it's level and near the coast, as it's one of the most dangerous side-effects of the warming. Sea level will continue to rise, as it did last time we've had an Ice Age. Once, it was possible to walk from Russia to Alaska. Nobody is complaining about not being able to do that anymore (and there some people who are most likely quite happy about that). Sea level had risen since then, and will continue to do so. We need to adapt, not change the nature. Not yet, at least.