A horse can destroy a human in a sprint, but over a brutal long haul in summer heat, Daniel Lieberman argues the advantage can flip: humans keep cooling themselves through sweat, while a horse’s larger body struggles to shed heat fast enough.

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In a sprint, it is no contest. A horse would leave a human far behind before either had gone a hundred metres. But over a long, punishing distance in summer heat, the Harvard physiologist Daniel Lieberman argues, the advantage can flip. Humans keep cooling themselves by sweating as they move, while a horse’s much larger [...] The post A horse can destroy a human in a sprint, but over a brutal long haul in summer heat, Daniel Lieberman argues the advantage can flip: humans keep cooling themselves through sweat, while a horse’s larger body struggles to shed heat fast enough. appeared first on Space Daily .