Humanity as a species is very reluctant to accept change. Whether it's their personal environment, culture, politics or whatever. Example - governments spend billions trying to regulate rivers so that they don't flood. In the process they usually cause environmental mayhem and when the rivers escape their confines you get floods which are then the fault of someone. Climates have been constantly changing throughout the history of this planet - ice ages? It warms up and it cools down. Species come and go, sometimes in mass extinctions but usually not. Now we have a situation where climate is changing and yes probably faster than it would have thanks to the activity of human beings. Stamp out pollution whether it be of the seas or the atmosphere - a cleaner environment is to everyone's benefit. But be prepared to live in a warmer climate, you will not be able to turn back the clock. To try and make us all live in some pre-technology fantasy world is not going to work. Try it and say hello to mass unemployment and starvation. Of course the greatly reduced population would probably be seen as a plus by the eco warriors as I suspect they plan on being among the chosen few. Rant over.