Climate change could produce a lot of misery and waste without necessarily leading to large-scale armed conflict, which depends more on ideology and bad governance than on resource scarcity.
The scarcity trap captures this notion we see again and again in many domains. When people have very little, they undertake behaviors that maintain or reinforce their future disadvantage. If you have very little, you often behave in such a way so that you'll have little in the future.
It's hard to get people to empathize with the poor. You can get some people to sympathize with the poor, but to empathize is actually very hard, because most people are not poor. I realized that scarcity gives you a thread.