The first time I tried filtering water from a stream, I knew that the distance I could hike in one day would never again be constrained by the amount of water I could carry. I remember the scene vividly: getting water out of a …
Read More »The first time I tried filtering water from a stream, I knew that the distance I could hike in one day would never again be constrained by the amount of water I could carry. I remember the scene vividly: getting water out of a …
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