Originally Posted by Kelb_Panthera
for those that are unfamiliar with the concept, my understanding is this: It's a sky-scraper with a farm inside.
The bulk of the light the plants get comes from sun-lamps.
I see, but I think the real biggest problem is that our current level of technology wouldn't let such a thing be cost-effective. Think about it: You need the electricity to power what amounts to hundreds of sun-lamps, and that's in addition to the costs of building/maintaining a skyscraper which alone would be prohibitively expensive.