Enlarge / It looks so peaceful up there. (credit: alxpin / Getty) Welcome back to Ars on your Lunch Break! It’s been a while since we’ve done this, so I’ll start with a brief orientation. This series is built around the After On Podcast—which itself is a series of deep-dive interviews with thinkers, founders, and (above all) scientists. Often exceeding 90 minutes, After On episodes run longer than the average busy Ars reader’s lunch break.