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July 16, 2008July 13, 2009
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Enlightenment from a Lemon

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This curious lemon light exploits an old trick of creating electricity from a lemon (along with some zinc and copper metal). The device was created by artist Yuri Suzuki to highlight the wastefulness of society.

June 20, 2008July 13, 2009
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Water-Powered Desktop Calculator

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This uses a water-based battery to generate enough current so that you can do your sums with the environment in mind! Just top this eco gadget up with some water and it will run for up to 3 months until the water has evaporated. Then you just need to top it up again.