Can’t express how much I enjoyed geeking out with existential risk studies specialist Phil Torres about nanobots, biotech, A.I. and other day-after-tomorrow threats to our species’ survival. The world will end not with a bang or a whimper but in a flood of gray goo? Well, it may depend on the choices we make today. Read the Q&A about Phil’s book The End: What Science and Religion Tell Us About the Apocalypse in the INDY, and be sure your nightlight has fresh batteries. Existential risk is cool but unnerving stuff. Now I’m worried my smartphone is trying to harvest my molecules.