fil-ter

I’d never heard of these — here’s Ellen doing it too.

Unlike many mammals, not to mention primates, people are astonishingly successful endurance runners… not only can humans outlast horses, but over long distances and under the right conditions, they can also outrun just about any other animal on the planet—including dogs, wolves, hyenas, and antelope, the other great endurance runners. From our abundant sweat glands to our Achilles tendons, from our big knee joints to our muscular glutei maximi, human bodies are beautifully tuned running machines … Our anatomy suggests that running down prey was once a way of life that ensured hominid survival millions of years ago on the African savanna.

Since the Earth is only 5,000 years old, I don’t believe any of this, but it’s interesting nonetheless.