 You are listening to Radio EcoShock. I am Alex Smith. My guest is Owen Gaffney from the Stockholm Resilience Centre. We're talking about leaving Earth's past behind, entering a new age created by human beings. Owen, let's get to the new formula presented in this paper, the Anthropocene equation. To be frank, it's a tough one for listeners to grasp, I think, and maybe even harder on radio. Why don't we start with this idea? Why is a megaformula needed?