Hashtag Yes-Filters

Water droplet rings

Thirsty for knowledge?  This is Sandra Tsing Loh with the Loh Down on Science. Water desalination filters are like blocks of Swiss cheese. The holes let water through, but stop salt and pollutants. Filters like these could be the key to getting clean water to drought-stricken areas! But some filters

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Water Wise

They paved paradise, put up a parking lot, and then what? This is Sandra Tsing Loh with the Loh Down on Science. One of the many ways modern societies lose valuable drinking water is through toilets. So says environmental engineer Stanley Grant of the University of California, Irvine. He and

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