Photos: At Epcot, hydroponics and Mickey Mouse pumpkins

A sage plant grows in what is called a "column pot." The idea is that the column, made out of PVC, rotates along a suspended track. Each time the column passes one of several magnets attached to the track system, it triggers a spray of nutrients at the top, which then trickle down through the column, feeding the plant and finally spilling out onto the ground below.

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Photo by Daniel Terdiman/CNET News.com