A house on the Florida coast. An assisted living program. A lively retirement community. Medicare. Our modern concept of old age—and even the idea of old age as a distinct stage of life—are products of our recent past. Where once Americans had little choice but to work until death, in the years after World War II government subsidies and employer pensions allowed people to retire en masse. But the enormous strides made in the 20th century are under siege today as we face critical issues like the uncertain future of social security, a caregiving crisis, and an aging and increasingly diverse society.

Today’s guest is James Chappel, author of “Golden Years: How Americans Invented and Reinvented Old Age.” He shares the surprising history of old age in modern America, showing how we created unprecedented security for some and painful uncertainty for others. From social security and 401(k)s to fitness programs and even The Golden Girls, Chappel explores the rise and fall of a shared ideal of old age, showing how it has been shaped by politicians’ choices, activists’ demands, medical advancements, and popular culture.

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