This is two hours long. It’s a lot of talking. You’ll need to listen to it a few times to catch all the nuances. You’ll be able to listen to it over and over again. What is it? It’s Derrick Jensen talking about his premises that civilization is unsustainable and how it’ll never change itself voluntarily. It’s humorous, depressing and hopeful, and I think you’ll enjoy it. For $18 or so, you can download it from Amazon in minutes, what you hear in it will change the way you look at civilization forever.