Filters

Poseidon Water employees stand between rows of reverse osmosis filters at the Western Hemisphere's largest seawater desalination plant, currently under construction in Carlsbad, California.

Desalination is an expensive energy hog, but improvements are on the way

Desalination — taking the salt out of seawater so humans can drink it — is becoming more important as the Earth warms and drinking water gets more scarce, but it's not a cheap or simple process. Here are some ways it might get more affordable and environmentally friendly.

Desalination is an expensive energy hog, but improvements are on the way
A group of people gather at a coffee shop in Shanghai to learn how to put together simple air filters with a fan and velcro.

If you can't afford an expensive air filter to deal with the smog in China, you can build a DIY model

If you can't afford an expensive air filter to deal with the smog in China, you can build a DIY model
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Low Salt Water with Low Energy Technology

Low Salt Water with Low Energy Technology
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Low Salt Water with Low Energy Technology

Low Salt Water with Low Energy Technology
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Filtering Seawater

Filtering Seawater
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Health Note/Fashionable Filters

Health Note/Fashionable Filters
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Filtering Seawater

Filtering Seawater
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Desalinization Plant Proposed in Florida

Desalinization Plant Proposed in Florida