Mark Mather, a demographer at the Population Reference Bureau, delves into a century's worth of shifts in U.S. birth and mortality rates, revealing the impact of societal changes. Liza Donnelly, a long-time New Yorker cartoonist, discusses the evolution of iconic cartoons and their cultural reflections. Douglas Barnes, a roller coaster expert, takes listeners on a nostalgic journey through the history of roller coasters, from the beloved wooden rides to modern steel marvels, sparking fond memories of thrills and excitement.