Whaler poised to harpoon a submerged automobile.

How the gourd killed the whale

By Albert Bates, Medium

It was a dried gourd that brought whales to the edge of extinction in the 19th Century. For some time now I have been writing in this space that our Achilles Heel as a species may have come at a fork along our evolutionary biology pathway many millions of years ago. Relatively few others of our fellow creatures decided to follow our lead, and for good reason. We decided to sweat. Having sweat glands conferred an immediate advantage, the type of advantage our kind also seems to select for, rather than thinking through the more distant implications. Only primates — such as humans, monkeys, and apes — and horses have skin covered by sweat glands to regulate their body temperature through evaporation of water. Maximum sweat rates of an adult human can be 2-4 liters per hour or 10-14 liters per day. Dogs and cats, which have just a few...

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