Just about any child can tell you that building a dam is harder than it looks. Whether you are using toys in the bathtub, or sticks and stones in a stream, water has a way of surmounting barriers.
Fortunately, humans have become adept at engineering dams that allow us to capture and use water for our agricultural, commercial and personal needs.
In the age of Covid-19 we are engaged in a worldwide effort to contain a non-sentient enemy that isn’t visible to the human eye.
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