Literally brilliant. A group of artists and scientists in Ohio have figured out how to take the acid waste from coal mines that pollutes streams and kills watersheds and convert the toxins into pigment for paints. The detoxified water can be returned to the stream. Although the best answer is to reduce mine waste by shutting down the coal mine (renewables, efficiency...), this certainly makes the best of a bad situation. Currently on Kickstarter.
Pollution to Paint - Brilliant
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