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.

Green hydrogen: Why do certain catalysts improve in operation?

As a rule, most catalyst materials deteriorate during repeated catalytic cycles—they age. But there are also compounds that increase their performance over the course of catalysis. One example is the mineral erythrite, ...

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