A brand-new study — published this week in the Journal of Animal Ecology — just revealed something remarkable about bumble bee colonies: they function as living thermostats, maintaining their brood at a precise 30 to 33 degrees Celsius, which is 86 to 91 degrees Fahrenheit, using only the bodies of their workers. When temperatures drop, bees vibrate their flight muscles to heat the nest. When it gets too hot, they fan their wings — a living air conditioning system. And when heat events become extreme, the entire colony redirects its labor away from foraging to cooling, with cascading effects on pollination. Kelly breaks down the science of bumble bee thermoregulation, the critical role of underground nest sites, and what this research means for how we think about wild bumble bee habitat. It's not just about flowers. It's about what's happening below the surface.

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