Cheap Drinking Water From The Sun, Aided By A Pop Of Pencil Shavings
Turns out, desalinating or sterilizing water with solar energy is way harder than Hollywood makes it look. But engineer Hadi Ghasemi, at the University of Houston, is trying to change that. And the secret to his success was sitting right in the pencil on his desk.

September 7, 2014 at 4:12PM
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