Numbers Don't Lie: 71 Stories to Help Us Understand the Modern World

by Vaclav Smil

in one hour, a horse can lose about 100 grams of water per square meter of skin, and a camel can lose up to 250 g/m2. However, a human being can easily shed 500 g/m2, enough to remove between 550 and 600 watts’ worth of heat.