Green Options

The evaporating clay fridge is clever, cheap and does no harm to nature. Why can't more technology these days follow its example?

This smart preservation device for foodstuffs was invented in 1995 by Nigerian engineer Mohammed Bah Abba. The Pot-in-pot cooler consists of a small earthenware pot nestling inside a larger one with wet sand filling the space in between. As the water in the wet sand evaporates, it extracts heat from contents of

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We can't keep from using energy completely, but it is important to make sure everything is running as efficiently as possible. Today what we're referring to is your refrigerator.

Always plugged in, it's one of those appliances that you can never shut off. That makes it even more important an item to make sure it is pulling as little electricity as possible.

In order to see if you are letting money flow right out

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