Researchers from the University of Wyoming have discovered that bumblebees, despite their seemingly inadequate wing size for their body mass, possess a remarkable cooling mechanism that prevents them from succumbing to heatstroke during flight. Studies on the North American bumblebee species *Bombus impatiens*, weighing between 95 and 254 milligrams, revealed that their complex, circular wing movements generate a powerful downward airflow, acting as an internal fan. This airflow, reaching speeds of up to one meter per second, is crucial for dissipating the significant heat produced by their flight muscles, which can be up to 35 degrees Celsius above ambient temperature. Without this cooling breeze, bumblebees would overheat within minutes, particularly on warm, sunny days, thus solving the long-standing "bumblebee paradox" of how they fly at all.