Heartwarming: How Our Inner Thermostat Made Us Human

An illuminating investigation of core body temperature regulation and its powerful effect on human civilization.

A hot cup of tea, coffee, or cocoa is calming and comforting—but how can holding a warm mug affect our emotions? In Heartwarming, social psychologist Hans Rocha IJzerman explores temperature through the long lens of evolution. Besides breathing, regulating body temperature is one of the most fundamental tasks for any animal. Like huddling penguins, we humans have long relied on on...