Scitechdaily iconScitechdailyAug 31, 2026

A 250-Year-Old Heat Mystery Leads to a Surprising Discovery About Human Sweat

In extreme heat, sweat can lose much of its cooling power for a reason scientists have largely overlooked: the air directly above the skin can become almost perfectly still. Arizona State University researchers have identified a physical effect that can reduce sweat evaporation by more than half in hot, dry, windless conditions.

A 250-Year-Old Heat Mystery Leads to a Surprising Discovery About Human Sweat

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In extreme heat, sweat can lose much of its cooling power for a reason scientists have largely overlooked: the air directly above the skin can become almost perfectly still.

Arizona State University researchers have identified a physical effect that can reduce sweat evaporation by more than half in hot, dry, windless conditions.

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In extreme heat, sweat can lose much of its cooling power for a reason scientists have largely overlooked: the air directly above the skin can become almost perfectly still. Arizona State University researchers have identified a physical effect that can reduce sweat evaporation by more than half in hot, dry, windless conditions.

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