World's Fair to Have Walls Made of Water

(AP) -- Walking through walls will be possible and even encouraged. When next year's world expo opens in Zaragoza, Spain, fairgoers will encounter a building with walls made of thin sprays of water. Inside, there will be normal building stuff: a cafe, an exhibition space and overhead lighting.

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<p><a href="http://www.physorg.com/news103389669.html">World's Fair to Have Walls Made of Water</a></p> <p>(AP) -- Walking through walls will be possible and even encouraged. When next year's world expo opens in Zaragoza, Spain, fairgoers will encounter a building with walls made of thin sprays of water. Inside, there will be normal building stuff: a cafe, an exhibition space and overhead lighting.</p>