This week, Studio 360 remembers “The Day After.” 25 years ago this month, half the country tuned in to watch this landmark TV movie about nuclear winter in the heartland. Kurt Andersen looks at the legacy of that broadcast and our lingering fears of all things nuclear. We’ll visit a decommissioned missile command base under a Kansas prairie, now inhabited by a peace activist turned real-estate agent. And gypsy rocker Eugene Hutz, who leads the band Gogol Bordello, uses songs and stories to tell how he fled Chernobyl with his family.