Metal-filtering sponge removes lead from water

Northwestern University engineers have developed a new sponge that can remove metals—including toxic heavy metals like lead and critical metals like cobalt—from contaminated water, leaving safe, drinkable water behind.

Microplastics could make other pollutants more harmful

Microplastics—small plastic pieces less than five millimeters in length—are becoming a ubiquitous ecological contaminant. Studies suggest that on their own, these tiny bits are potentially harmful, and it's unclear what ...

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