In fact, listen to Gwynne Dyer's documentary anyway (it's on the podcast), whether you want to be scared or not. The key statement:
Everything that is expected to result from global climate change driven by greenhouse gases is not only happening, but it's happening faster than anybody expected.
Learn why, and how global warming and climate change, which should rationally be non-political, became a political and ideological issue anyway, and what might happen—including some potentially nasty wars. Ignore anything else I've been pointing you to. Really. Just listen.