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A comment on Ask HN: Interesting problems that should be solved but aren't being worked upon?.

Re:Ask HN: Interesting problems that should be solved but ar... by desi_ninja on Tuesday July 21, 2020 @02:01AM (#23904638)
Clean drinkable water from ocean water and dirty water. most of the world suffers from lack of clean drinking water. create a tech to clear sewer water without needing much electricity in a cheap way
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