If you leave a clear bottle of water in the sunlight, the ultraviolet rays will kill any harmful microbes in that water, making it drinkable … but it has to sit in the sun for at least six hours. A ...

At least 2 billion people worldwide routinely drink water contaminated with disease-causing microbes. Now Stanford University scientists have invented a low-cost, recyclable powder that kills ...

A magnetic powder that can rapidly suck out all the microplastics in water could be used by water treatment plants to better remove the contaminants. At present, most of these plants can remove only ...