DIY Liquid Battery.

Photo: Mike Walker

This article from PopSci tells you how to make your own homemade liquid battery using copper sulfate, water and electrodes! - via Random Good Stuff

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I would like to know the issue number and page number of "Gray Matter" "A Tall Glass of Juice" in your February 15, 2007 issue. Your help would be greatly appreciated. Thank you for your time.
Please contact me at
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