How the Water Filter Became an Affordable, Ultralight Backcountry Tool
Backpackers and hikers tend to take water filtration for granted: for $18, you can buy a straw-style filter that weighs less than two ounces, is small enough to stick in your pocket, and will provide safe drinking water from any stream, lake, or questionable puddle in the country. It’s nothing short of a miracle, however, […]