For a lot more than two hundred,000 a long time people have been nomadic foragers, residing in compact groups spread about broad lands. Then, about ten,000 a long time ago, in several corners of the world, some persons settled down and commenced farming. Villages sprung up and grew into densely populated metropolitan areas.
And that’s when poop turned a difficulty. Urbanites could not do their company in discrete places, sparsely scattered throughout the landscape. They experienced to defecate wherever they ate, slept and lived 24/seven, alongside lots of other individuals. We essential a new option.
But archaeological proof shows it