If you’ve ever walked past a bee’s nest on a hot summer day, you’ve probably been too focused avoiding getting stung, rather than stopping to wonder how all those bees stay cool. Don’t worry, Harvard scientists have braved the stingers to ask and answer that question for you.
Honey bees live in large, congested nest cavities, often in tree hollows with narrow openings. When it gets hot inside the nest, a group of bees crawl to the entrance and use their wings as fans to draw hot air out and allow cooler air to move in. The question is, how do bees self-organize into these living ventilating units?
Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and the Department of Organismic and Evolutionary Biology (OEB) have developed a framework that explains how bees use environmental signals to collectively cluster and continuously ventilate the hive.
“Over millennia, social insects such as bees have evolved to harness and exploit flows and forces and collectively solve physiological problems such as mechanical stabilization, thermoregulation and ventilation on scales much larger than the individual,” said L Mahadevan, de Valpine Professor of Applied Mathematics, Physics, and Organismic and Evolutionary Biology, and senior author of the study. “A combination of measurements and computational models quantify and explain how fanning bees create an emergent large-scale flow pattern to ventilate their nests.”
Read more at Harvard John A. Paulson School of Engineering and Applied Sciences
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