I spent 4 hours at Evolve today, figuring out how I'm going to hang this piece. This is all I have to show for my time, but the practical details of how the piece will go up are solved, so I consider the day a complete success.
The piece is going to be hung in sections - probably 16 - 20 of them - from pieces of plastic needlepoint grid. The grid comes in 12"x24" pieces, and will be tacked to the ceiling with push-pins (my new favorite hanging tool, since I used it to hang the fibonacci piece as well). In some places the grid will be cut to be more narrow, depending on where it is in the room.
After I got home, I also spent a lot of time researching the actual purpose of grapefruit pith, but haven't yet come up with a satisfying answer with the online resources to which I have access. If any of you biologists out there have any ideas, I'd love to hear them.