MSR can make that claimand more with its new Guardian Water Purifier. Filtersystems have generally been constrained by their ability toeliminate only bacteria and Cryptosporidium (a ...

Seven years ago, the US military had a dilemma: its service members, based in the world’s harshest and most resource-deprived locales, needed access to clean drinking water. But there wasn’t a ...

The U.S. military asks them to create water filtration technology designed for troops. Global health nonprofits seek technologies from them to help filter safe drinking water in developing countries.

Two common ways of filtering water are portable pump filters, such the MSR Guardian, and bottles with built-in filter straws, like this one from Vapur. Korean startup Purisoo combines those two ...

Physical water filters—the kind you pump water through—are popular because they’re reliable and easy to use. But they’ve always had a major drawback: the inability to catch viruses, which is ...