651. The Ultimate Dance Partner
This episode explores the past and present of horses, from their central role in ancient empires and industrial America to their modern status as high-value sport animals in disciplines like dressage. Economist-equestrians and historians explain how horses evolved from "living machines" that powered cities to luxury goods shaped by opaque markets, billionaires, and specialized breeding. The host then visits a New Jersey dressage barn to see training up close and even rides a high-level sport horse himself to experience the human-horse partnership.
How refrigeration took over the world
The episode explores how refrigeration and the modern cold chain emerged, from Gustavus Swift's centralized meatpacking and refrigerated railcars to the scientific work of chemist M.E. "Polly" Pennington, who standardized safe temperatures and built public trust in chilled foods. Hosts and guest Nicola Twilley trace how continuous refrigeration reshaped agriculture, consumer expectations of freshness, women's household labor, and even geopolitical events like war logistics and Irish independence. They also examine the downsides of a cold-dependent food system, including diminished flavor, shifted food waste, and significant climate-warming emissions, along with potential efficiency improvements.