I like the carbon footprint reduction idea. That will probably work for Wolf when it comes up. We also try to avoid a lot of the "adult" news issues with him.
He found out about the Mayan Doomsday madness and freaks out, like literally freaks out, whenever anyone mentioned anything at all about it. What we've done is explain that there are some things that adults like to discuss even though they aren't necessarily a real threat, just because adults like to think about possibilities. We tell him when a topic is that type of topic (we put politics in this category). It seems to help. There are things we can't do that with, things that are actual threats, but so far he hasn't fixated on any of those.
