You can only prevent something that either hasn't yet happened or isn't in the process of already happening. Global warming/Climate change IS happening. There is no way to prevent it. What MIGHT be possible is to minimized it, or mitigate it. It's simply too late to prevent it.
The point is nobody cares or believes your scary stories.
The same progression has played out throughout history from the introduction of the heliocentric theory of the solar system which threw the church into fits (murderous fits, I should add) of spiritual apoplexy to the first postulation of continental drift which was originally laughed at until underwater sonar mapping showed how and where it was happening. Today that's the science of plate tectonics.
The problem with your theory is that the AGW cult claims to be in the position of the geologists who insisted continents didn't move and the sceptics are in the position of the geologists who claimed they did. The AGW cults claims to represent scientific orthodoxy.
People who challenge conventional thinking don't represent scientific orthodoxy.
The AGW cult is the new orthodoxy. Your belief that you are "challenging conventional thinking" is utterly hilarious. the last hing people who go around shouting "the debate is over" and "we have a scientific consensus" are doing is challenging conventional thinking.
For years (decades really) the idea that humans could affect the climate through the introduction of greenhouse gases wasn't even on the radar. However, a tiny group of scientists were taking measurements of gas levels and speculating on the effects. Virtually nobody paid any attention. Even after levels started rising appreciably, the idea seemed outlandish to many people.
By my recollection, it wasn't until about the late 1970s that it started gaining more attention. What prompted it was the probes to Venus which revealed an incredibly hot and inhospitable world where greenhouse gases were many times our levels. That's actually what led James Hansen, who was involved in the Venus probes, to switch his studies to Earth.
But even today, countries and corporations are mostly tinkering around the margins for a whole host of reasons, not the least of which is the whole mantra of economic growth, materialism, and the human desire to have more and more of what they want. The simple fact is that people want what they want, and they're rarely satisfied regardless of how much they have. Even when people have bounty, they want more. Then there's the fact that the population is increasing, and all those billions of additional people have wants and desires. That's no small matter when one realizes that the Earth's population probably only reached 1 billion about 200 years ago, and it's now estimated to have reached 7 billion in 2012 and is slated to reach 8 billion 10 years from now. All those people will use natural resources, and put increasing amounts of CO2 into the air.
But none of that changes the fact that the nations of the world aren't really doing much about the problem because people tend to put things off until there's a crisis in their midst. Unfortunately, like most things, people and nations will find excuses to wait until the 11th hour. What's also unfortunate is this isn't the kind of problem that can be turned around quickly because additional new gases in the atmosphere can affect the climate for another hundred years if not more. What I'm saying is that it won't be orthodoxy until people take real action, and I don't see that happening anytime soon. Hell, I'd be surprised if it happens in the next 50 years. In my personal opinion, it's going to take one or more cataclysms (like massive crop failures, famines, water shortages, and social upheavals, before people realize that they can't wait any longer. Today's moneymen and decision makers will be long dead by that time, and they'll be off the hook as far as being held accountable.