I think a lot of current hysteria it is driven by petroleum politics and geopolitics. Otherwise, both parties in US government would have been pro-environmentalism. Try to think of why someone might have a different position given that they understand the science.
Finally, regarding humans surviving. What is the ultimate number of humans that should exist on earth? How much environmental damage or "change" is allowed to sustain these humans or for "progress" to occur? How many children should humans be allowed to have? Who gets to decide these things? Should humans be allowed to develop new industries at the expense of the environment?
Some people think that it's best to live in tribes and forego all technology. Some are content living with current tech advancement and keeping population at about what it is now. Others think humans should spread to as many planets as possible.