Did you know the Egyptians had refrigerators 2500 years ago?

They may not have been as efficient as ours today but they kept fruits and vegetables cool.

It's called a Zeer pot. It's an evaporative cooler used by a lot of third world countries today.

They are cheap and easy to build and really do extend the life of perishable fruits and vegetables.

On the next page watch this amazing video on how to make this $5  refrigerator.

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