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New green inventions: 15 cutting-edge items

By: Bryan Nelson on March 23, 2010, 11:15 a.m.
New green inventions: Bedol water-powered clock

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Bedol water-powered clock

All you have to do to make this ingenious clock run is fill its tank with tap water and, depending on the particles that are in your water system, possibly add a small amount of table salt. Aside from saving you money on batteries, the Bedol water clock will set you back only $16.