Flashback Friday: Penguins on treadmills. Need we say more?

We all know penguins are cute, especially when they waddle around on land. So the idea of putting penguins on a treadmill, like they do in this study, sounds like an easy way to rack up YouTube hits (e.g., see video below). Well, apparently this cute activity also has a scientific purpose. In the study, the authors measured the metabolic rates of penguins on treadmills, comparing males, breeding females, and moulting females. Because metabolic rates are related to food consumption, the resul

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